Blurry/disabled subpixel rendering on text in chat

[JoannesJ]

I recently noticed that Blink browsers were rendering chat text with subpixel rendering disabled.
This seems to happen when a gpu slice is forced, so stuff like setting a css transform property.
This is now fixed on Chat's end, but the resizable-bar on Rustla is still triggering it when embedded.

A solution would be to set the transform property on resizable-bar to none when not in the act of resizing.