Can't Level Up Hero's skill while it is active

[xvalvrave]

Found out this when I was playing Ivy

Ivy: https://forums.playdeadlock.com/threads/ivy-bug-cant-level-up-watchers-covenant-when-active.11723/
Pocket: https://forums.playdeadlock.com/thr...ets-flying-cloak-while-cloak-is-flying.26706/
McGinnis: https://forums.playdeadlock.com/threads/cant-level-mcginnis-third-skill-while-it-is-active.13001/

These posts are posted as early as July and we still have the same bug till now. It is very annoying for someone like me who levels up skill asap and during fight. Please do something about this, I know this can be hard to fix as a developer and it is definitely a minus in user experience.