Extra units lost when healing my champa

I was in the latest valiant event quest (quest 2 mordo fight btw). Somehow when I was healing my champs and I press the heal button which cost me 32 units, then my screen was froze and the units amount on the upper right corner starts dropping to zero, I restarted the game and it still shows I have zero units now…
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(if game lagging caused it to seam like you didn’t press it at first ?)
That has been bugged where it would count as multiple times, but costs you each time as if the first one didn’t heal you up.