Can't fix or wont? I just monkey-patched it on my friends steam to work, I simply disabled "startvr" (width=0) and on the new_community_label, then after that just rewrite the colors on the chat screen so they colors are visible, I recommend using a color such as "0 255 0 255" (green) instead of fspink so it is visible, I also added in the bigscreen control to have a width=0 also since I do not use it, but with a little more effort you could make a custom button for it, I just am not willing to put that sort of time into it (my friends layout atm)
i.imgur.com/rwIFYJ4.png this might have bugs but it works o.o (sorry, i meant to reply a little higher up in the chain where they said the issue COULDNT be fixed)