Hi,

thanks for this report. We are currently working on a new Techtree UI so it's rather unlikely we will fix the issues of the old one.

And for the Charaa tech tree:

1) Built structures Whip, Shift, Shade, Crag stay always dimmed (built or not built)...

2) Contamination, Bone wall, Rupture - are always dimmed too as if they were unavailable...

I experienced techtree UI glitch today too, in my case at some point successfully done research was shown to me as incomplete despite it being clearly active. This was the case with shotguns (shotguns could be bought yet research button stayed "active", pressing it did nothing), more annoyingly this was also the case with armor/weapons 2: buttons for them were "active" but did nothing, and buttons for 3rd were just inactive and thus couldn't be pressed even through server clearly knew lv2s are researched. Leaving and rejoining server fixed that, still annoying

glad to see UI is gonna be updated and likely soon.