Skitters blister back heath glitch

There is a game but when you attach skitters to blister backs and mount them to the ground they can’t be healed to regian heath no matter what type of heal u use
Step one build a blister back
Step two build two skitters
Step three place symbiots on skitters attach them
Step four go fight enemy’s retreat back place as artillery on the ground
Step five the glitch is real now there half heathed and can’t heal

Yeah if u put a skit on blisterback it won’t ever get fully healed

Blisters show healing problems even since the beta, I’d like to know what’s wrong with them