Tested under an UNMODDED Minecraft aside from my resource pack. I found out that breaking animation if fully opaque will only show the block breaking animation, removing the texture of the stained glass or ice when hit. This also effects anything behind the breaking ice or stained glass that probably is under the same renderPass. Including other ice, stained glass and water.
I'm sure it's not the same issue as another bug previously posted about Cloud/Hitbox and such as this does not have any effect on the clouds.
The best way to test this is with a resource pack modded with Destroy_Block0-9.png with a full opaque light gray put under the existing animation. The vanilla breaking animation doesn't do this it seems.
Hope this helps.
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Ezekiel
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Zeek, thanks for that, I thought it was another issue entirely until I tested again to duplicate that bug and yep you're right, it is XD. Sorry 'bout that I'll up-vote that one and hopefully Mojang will fix that up soon enough XD
Duplicate of MC-9553 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.