Currently the favicon for wikifunctions in static/favicon has only a 16*16 format of size:
koi@vm1:~/mediawiki-config/static/favicon$ identify wikifunctions.ico wikifunctions.ico ICO 16x16 16x16+0+0 8-bit sRGB 1150B 0.000u 0:00.000 koi@vm1:~/mediawiki-config/static/favicon$ identify commons.ico commons.ico[0] PNG 16x16 16x16+0+0 8-bit sRGB 528B 0.000u 0:00.000 commons.ico[1] PNG 32x32 32x32+0+0 8-bit sRGB 1260B 0.000u 0:00.000 commons.ico[2] PNG 48x48 48x48+0+0 8-bit sRGB 3865B 0.000u 0:00.000
Another issue is the sul logo of wikifunctions (on beta cluster). When viewing from Special:CentralLogin, the logo representing wikifunctions is missing.