Steps to reproduce:
1) Activate DS via your hotkey panel.
2) Remove DS from your hotkey panel.
3) Add a feat to your hotkey panel.
4) Activate a skill via your hotkey panel.
Expected result: after deactivation all effects will fade away properly.
Actual result: AC/AB/SAVE/Temp HP bonuses do not fade away and player can move without speed penalty.
Screenshot(s):

As you can see - AB still the same.
Vid: https://youtu.be/aF7SpjH7PwM