it seems like the glass has a double texture if placed, not much too say, I think the image explains best
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mxblue28
Can you attach a screenshot of this happening with the F3 debug screen enabled?
Avoma
This ticket is a duplicate of MC-219985.
migrated
Um, what? What does that have to do with this?
violine1101
It's affecting more blocks than just glass panes, also doors, and the ones mentioned in MC-219985. Also check the duplicates of that ticket.
In general this is usually an issue with 3rd party overlay apps.