Example 1: have crippling strike. Assign it to a hotkey. Upgrade to debilitating strike. The hotkey is still for crippling strike, even though it is no longer in the character's HUD. You can still use it, though.

 

Example 2: have athletics trained up, so you have second wind. Assign it to a hotkey. Respec and don't train up athletics. You still have a hotkeyed second wind, which you can actually use to heal a tiny amount of health.

 

Here's a dropbox link containing a save game and a output_log for example 2: https://www.dropbox.com/sh/w8jqdsw5flgdg1a/AAA604qFbJVH86GbfxCiCs1fa?dl=0 (look at Aloth, he still has a usable second wind even though I removed his athletics ability from a respec)

Greetings,

 

And thank you for taking the time to notify us we are aware of this issue and our Development team is in the process of providing a fix ASAP.

 

Cheers.