WowAce

What version of Grid2 and game type (classic or retail) are you using ?

 retail 2.039

What game client version (windows or mac) and language are you using ?

 Windows

What steps will reproduce the problem?

I have this issue mostly in leveling dungeons and sometimes in m+ dungeons. I dont know if this has something to do with scaling hp or with shields. 

Did you try having Grid2 as the only enabled addon and everything else disabled?

no.   

Was it working in a previous version? If yes, which was the last good one?

I dont know. It worked some months ago without any problems. 

Do you have an error log of what happened? If you don't see any errors, make sure that error reporting is enabled (`/console scriptErrors 1`) or install [BugSack](https://mods.curse.com/addons/wow/BugSack).

no error reports

Please provide any additional information below.

 here is a video showing the issue https://www.veed.io/view/32a80af2-7211-4b41-a38f-f7d3a0c28f94

It seems the tank health is droping and recovering very fast, check if the Health Update Frequency is set to "Instant" in the health status configuration, if this is que case and you dont want to see fast changing health bars use the "Normal" update frequency.

Another possibility: check if some extra status like some debuff is wrong linked to the health bar indicator.

The only thing I can say is, that this is no health drop and I googled that there is a problem with scaling health with low chars at leveling dungeons when I am lets say level 47 as a healer and other people are lv 10. But I sometimes have this also at m+. Maybe this is another issue there. I will have a closer look to that. 

But I dont know if anything can be done with fixing this flickering at leveling dungeons. This bug seems Blizzard related.