I was not sure if anyone was able to see my past post, as it was already closed without further comment adding my gif to it.
I built a snow globe on a Minecraft server the other day. Fireworks shoot out of a dispenser in the middle of it. The dome was made out of regular glass, but I changed it to white stained glass (as shown in the GIF attached). When changing the glass, I noticed that when a firework is spawned, it seems as if there's a big shadow over the snow globe or some blocks appear to be appearing/disappearing. I am not sure what the case may be.
Related issues
duplicates
Comments

Oh, I apologize... I wasn't sure if anyone would see my added comments.

When will this issue be fixed?

When the devs get to it. We don't decide what they work on.

I mean - do issues get fixed in a chunk, like when the next release is out?

You might be interested in this page: https://bugs.mojang.com/browse/MC#selectedTab=com.atlassian.jira.plugin.system.project%3Aroadmap-panel
Dupe of MC-105938 (which is a dupe of MC-9553). Don't dupe your own tickets!