Tab close button

[Nightbird]

About config :
browser.tabs.closeButtons => 1

so the close button is active on all tabs

Problem : i see the close button x only on the active tab
On the other tabs, i see the x only if i put the mouse on the right corner of the tab.

Is it normal ?

With PM 27, i see the x on all the tabs.

[coffeebreak]

Same here, and background tabs have a strange image before you hover on them. (Win 7 x86)

Maybe it's the W7 variant of this issue: Close button image?

2nd tab from L is selected; 3rd tab is background, but hovered (fresh profile):

pm28-tabCloseButtons.png

[Nightbird]

What i see :

tab close button PM28.PNG

the active tab is "Start", the x is grey

[Michaell]

browser.tabs.closeButtons
Default is 1, and the close buttons are visible here on inactive tabs until enough tabs are opened then those Xs are hidden (9 tabs + 2 pinned for me). Once hidden this way they don't reshow on hover.
EDIT: I read the github issue; possible visibility is affected by Win ver., so no need to test more until fixed.