I just installed New Moon and have played with it a bit. I started with a new profile, to which I added a few extensions.
It works great, has less compatibility issues than PM 26... and a couple of new quirks.
Menu bar and title bar text in Windows 10
We're back to the same problem as PM 26.0.0 (or 26.3.0?): When the title bar is coloured, the text is black and hard to read. I think you should either implement the same algorithm as in PM 26.3.3 or do as Firefox and use a grey titlebar.
Some Google products work better than with PM 26
- Work with the modern interface:
– Youtube: as far as I see it, we are in HTML5 with the full selection of options, just like with Firefox.
– Gmail, Google Drive, Agenda, MyAccount, Docs, Sheets, Presentations: seem to work at 100%
– Google Plus, Hangouts, Photos: look OK, but I have no experience with them - Work OK, but with the older interface (black top bar) : Google search, translate, News.
One of the side effects of the older interface is that there is no button to choose the other Google products. - Older, limited interface: Google Maps
Same issues as with PM 25 and 26: Satellite view instead of 3D, and impossible to drag a route through selected points.
I make limited use of it, but from what I see, it works correctly, including videos.
Other sites
I have not seen any problems with any of the other sites that I use normally: my bank, my church, other technical information sites, etc.
Extensions handling
Is it still appropriate to declare New Moon as "Firefox 24.9"?