The bug
Breaking stained glass now results in solid particles instead of transparent ones like in 1.13.
From @unknown:
In Minecraft 1.13.2, when you break a block which is semi-transparent, (like blue stained glass) the block break particles are also semi-transparent.
In Minecraft 1.14.2, the block break particles are not semi-transparent.
I have tested Minecraft 1.14 and 1.14.2. Both have this issue.
Please see my example images.
1.13.2 (working correctly)
[media]
1.14.2 (broken)
[media]
(I have a resource pack on which does not affect the bug in any way.)
Linked issues
is duplicated by
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Comments

Does MC-9553 describe your issue?

MC-9553 does not describe the issue!
This issue is not about particle rendering order.
In Minecraft 1.13.2, when you break a block which is semi-transparent, (like blue stained glass) the block break particles are also semi-transparent.
In Minecraft 1.14.2, the block break particles are not semi-transparent.
I have tested Minecraft 1.14 and 1.14.2. Both have this issue.
Please see my example images.
1.13.2 (working correctly)
[media]1.14.2 (broken)
[media]
(I have a resource pack on which does not affect the bug in any way.)

Confirmed for 1.14.4

Affects 19w35a

Duplicate of MC-135334
Keeping this report as it's more detailed

Confirmed for 19w38b with ice and slime blocks. (Also water particles from falling, but they're pretty much a bug in their own right.)

Affects 19w40a

Is it an intentional design choice that ice will not allow light to pass through? This was tested on 19w46a
[media]@unknown, that's a completely separate issue. I think that's intended though, iirc glass works the same way. Feel free to create a new ticket though, if we don't have one already.
Same for ice, as well as for sprinting and falling.