Unclaim on 'blue' tile causes it to draw normally but it is still 'blue'

Steps to reproduce:

1. click a reinforced wall tile with right click

2. it becomes blue

3. unclaim it with a spell

4. it stops being blue

4. minions would still break it after a while

if you'd click buggy tile with right click once - nothing happens as it was actually blue and becomes normal.

Expected: after unclaim applied, check if the tile was marked for destruction, and if yes - reapply blue color hint.