Someone else hat have noticed this in 6.3 ? I running both 6.3 and 6.21, i testing 6.3 with my script to see how it's compatible or not, how ever i noticed my nicklist "have it aligned to the right" flicker, i coloring the nicklist depending on status using cline, i also have a timer that update titlebar every second, i doing this since i have the time there and it show seconds, in 6.21 i use the same style of titlebar, but there the nicklist dosent flicker, if someone had the same problem and solved it i would like to know how, and no i like the time up there to /timers off arent a option

Yes I have noticed this too.
Not using /cline, my nicks are colored though(with /cnick colors), except for regular nicks which are left as 'listbox text' color.

I've noticed this when doing /setlayer 255.

Well I'm not using /setlayer at all.

I am also getting this and it seems to happen weather I have nick colours on or not.

Has anyone found a way to fix this?

I'm getting the same thing, flickering that happens faster than any of the timers I'm running, however I have noticed that the nicklist loads faster than before, probably 7x faster. the flickering does get annoying though.. I'm not sure which I would prefer more

Thanks this has been fixed for the next version.