I bought a texture pack called VanillaBDcraft available from the Minecraft Marketplace and I noticed that some stained glass particles were missing. I posted a bug on their website available through this link https://bdcraft.net/community/bug-reports-f3/many-stained-glass-particles-are-missing-t8055.html. After review, an admin concluded that it was a game bug as "the game is responsible for generating the block breaking particles". Weirdly enough, when I remove this texture pack, the glass particles do appear properly.

The affected blocks are: White, Red, Yellow, Lime, Green, Cyan, Blue, Purple, Magenta, Pink stained glass. For some reason, Light Gray, Gray, Black, Brown, Orange and Light Blue stained glass are not affected. The normal glass is also unaffected.

Here is a video of the bug. The texture pack is applied and is available at https://www.minecraft.net/en-us/pdp?id=79ef8357-b82d-4c14-b756-3f3296ea1844.