1500589 - Don't set min-width on XUL <button>s that have flex>=1

Status: NEW

(Toolkit :: UI Widgets, enhancement, P3)

Description

[:Gijs (he/him)]

The consequence is they end up being squashable, and then their label text overlaps the button's bounds and looks broken.

We currently have styles in windows, macos and linux toolkit's button.css ( https://searchfox.org/mozilla-central/source/toolkit/themes/linux/global/button.css#16 ). We should either set this as such:

button:not([flex]) {
  min-width: ...;
}

or remove it:

button[flex]:not([flex=0]) {
  min-width auto;
}

but we'd need to do that in all the themes, and ensure we weren't breaking anything.

Comment 1

[:Gijs (he/him)]

If we do this, we can revert the fix in bug 1497443.