Proton Mail: Search Bar - Incorrect clamp() CSS Function

[sunstarunicorn]

About two weeks ago now, I noticed that my Search Box in Proton Mail had suddenly gotten a lot smaller than I was used to, as my screenshot below shows:

2025-05-04 Small Search Box.png

I assumed it was a new bug with Proton Mail and opened a support ticket with them. As I had half-expected, they came back and said, sorry, we don't fully support browsers like Pale Moon, so you may see some bugs when using Proton Mail with Pale Moon. I knew that, of course, having lived with several small Proton Mail bugs ever since they rolled out the new Proton Mail and shut down their original version.

However, the Proton Mail support did come back with something else, which I wanted to bring here. They did some additional investigation on their side and called out an 'non-support or incorrect support of clamp() CSS function in PaleMoon on searchbox--adaptWidth.'

They also said that they've been using this for their search box for over a year, so if I've only noticed a problem quite recently, they suspect a recent change on the Pale Moon side might've caused a regression issue.

Given that, I thought I'd come here and report the issue, as I know this search box has been working just fine for me until very recently.

I can confirm this behavior occurs on a clean profile, even after updating to Pale Moon 33.7.1 (I updated today from Pale Moon 33.7.0, just to see if that would fix the issue).

If there's any other information needed, I'll do my best to provide!

[frostknight]

At least they said they don't *fully* support palemoon instead of we don't support palemoon period.

I'll see if I can log in and have same problem.

No, I didn't have the same problem, weird, it looks like it did before a few weeks ago. Is something in your setup different? I am confused.

[andyprough]

I can confirm. That search box is about an inch more narrow than on a Firefox-based browser, but still functional and plenty useful. Not really a show-stopper bug.

Proton should really give some kind of option for expanding that search box bigger, to fill up most of the space in the web page view.

They do support Pale Moon more than a lot of online services. I had an issue where the Proton Drive website wasn't working at all in Pale Moon earlier this year, which was due to a change on Proton's end, and after a little bit of prodding on my part Proton fixed it. They tried to claim it was due to a recent change in Pale Moon, but I showed them that I ran into the same bug when using a year-old version of Pale Moon, even though that same version and later versions had worked just fine with Proton Drive's website for me last year. Anyway, they got around to fixing it after a couple of weeks. Pretty good people overall.

[frostknight]

I can confirm. That search box is about an inch more narrow than on a Firefox-based browser, but still functional and plenty useful. Not really a show-stopper bug.

They do support Pale Moon more than a lot of online services. I had an issue where the Proton Drive website wasn't working at all in Pale Moon earlier this year, which was due to a change on Proton's end, and after a little bit of prodding on my part Proton fixed it. They tried to claim it was due to a recent change in Pale Moon, but I showed them that I ran into the same bug when using a year-old version of Pale Moon, even though that same version and later versions had worked just fine with Proton Drive's website for me last year. Anyway, they got around to fixing it after a couple of weeks. Pretty good people overall.

Sounds like they have some decency.

I don't use firefox anymore except to install librewolf on certain computers. But that being said, I haven't checked librewolf on this bug. That being said also though, its probably a minor nuisance if I had.

Disroot.org has a bit of a problem with palemoon sometimes due to their ui being way over the top. It lags quite a bit at first. Then it works fine with an annoying warning of course.

I only use librewolf for obvious reasons, compatbility problems otherwise I prefer palemoon.

[andyprough]

Off-topic:

I don't use firefox anymore except to install librewolf on certain computers.

Well, I said "Firefox-based". As you are probably well aware, that means Trisquel's Abrowser for me. Which is the non-ESR version of IceCat.

[frostknight]

Well, I said "Firefox-based". As you are probably well aware, that means Trisquel's Abrowser for me. Which is the non-ESR version of IceCat.

Smart. And btw, I looked on icecat web site, supposedly its not as backed up on updates as it used to be.

[adoxa]

See if this userstyle works (I don't have an account, so haven't tested, but the style did show up on the login page).

Code: Select all

@-moz-document domain("proton.me") {
  .searchbox {
    inline-size:calc(100vw*.35 - 1.25rem) !important;
  }
  .searchbox--adaptWidth {
    inline-size:calc(var(--width-conversation-column, 35vw ) - 1.25rem) !important;
  }
}

[andyprough]

See if this userstyle works (I don't have an account, so haven't tested, but the style did show up on the login page).

Yup, that works, thanks adoxa!

[sunstarunicorn]

Please forgive my ignorance - I've never really had to tinker with individual websites like this.

How do I apply a userstyle?

Edit: And this may not be a show-stopper bug, but it's really annoying to have my search bar/box be so small when it wasn't before.

Second Edit:

They do support Pale Moon more than a lot of online services. I had an issue where the Proton Drive website wasn't working at all in Pale Moon earlier this year, which was due to a change on Proton's end, and after a little bit of prodding on my part Proton fixed it. They tried to claim it was due to a recent change in Pale Moon, but I showed them that I ran into the same bug when using a year-old version of Pale Moon, even though that same version and later versions had worked just fine with Proton Drive's website for me last year. Anyway, they got around to fixing it after a couple of weeks. Pretty good people overall.

Andy,

That's exactly the same argument they used on me!

Which made me suspicious, so I just went and checked Proton Mail on an older laptop of mine that's still running Pale Moon 33.6.1 - lo and behold, I see the exact same behavior with the search bar!

So I've now gone back to the support ticket with my older browser evidence to wave it and call shenanigans at them. Let's see what they come back with.

[Kerebron]

How do I apply a userstyle?

Use Stylem add-on.

[andyprough]

That's exactly the same argument they used on me!

Which made me suspicious, so I just went and checked Proton Mail on an older laptop of mine that's still running Pale Moon 33.6.1 - lo and behold, I see the exact same behavior with the search bar!

So I've now gone back to the support ticket with my older browser evidence to wave it and call shenanigans at them. Let's see what they come back with.

Exactly what happened to me with the Proton Drive website earlier this year. In the past Proton used to immediately assign a ticket and start working on the bug, but it appears that in recent months they've added a layer of a simple triage person you have to get past first. I found that the successful action was to just persistently keep pushing for them to solve it, but politely and without showing any anger. In fact, I had to file the bug twice, but then they fixed it and thanked me for the bug report.