ESR 115.9.0
Native control patches for ESR 115.9.0 Win64 only.
Originally released on 19 March 2024.
No new changes since the previous release. But, if you are a developer who recommends this, then I will write documentation soon on a better method of applying the caption button mask. It is recommended that you abandon the approach involving the official mask, as this is broken with certain WebRender backends (ANGLE), and is much more limited than the new approach that I found out. (By the way, I figured out the ANGLE bug where no mask would display partially. Clear rectangles (which erase the entire background for the contents underneath them) do not work if a layer has any transparent background in the ANGLE backend, for some reason. If you made the background of the window a solid colour, then it would work; this is almost completely useless though. I'm not experienced in graphics programming, and I really couldn't figure out why this is the case.)
R2 will most likely just add native focus outlines. I meant to look into them for this release, but I didn't schedule my implementation well. I just wanted to get this out the same day as the Firefox update in question.