Trixion - Can't save tripod changes (has a workaround)

I’m not sure exactly what causes this state, but I encounter it constantly in Trixion Training Grounds:

The “Save” button remains disabled after making changes to Skill Tree. Changing a tripod level, changing the level of a skill, or switching to a different tripod will have no effect, because the save button is never available.

The workaround seems to be to switch to the Skill Rune tab, remove the rune from any skill, save, put it back on, and save again. This temporarily restores normal functionality.

Thanks for reporting this and thank you for the workaround!