Text and other UI elements are completely black when being affected by night vision and the void/blindness simultaneously

Yes probably.

Can confirm in 1.15.1-pre1, I've attached a debug crash report as well.

can confirm, happebs in both of my notebooks, one of which has nvidia geforce (1.15.1)

You can do it while dying in the void.

I reproduce in 20w16a without knowing about the bug. Also occupied by unbearable flickering. This was used to be a test world, though.

Fixed in 20w17a.

Can't reproduce in 20w16a or 20w17a.

I can still reproduce in 20w17a, reopening and will add a screenshot. In the screenshot I gave myself blindness while underwater, but giving night vision and blindness simultaneously has the same result.

Strange I can no longer reproduce in 20w17a. I think it because it with graphic cards the issue.

Can still reproduce in 20w18a with an Intel graphics card.

Confirmed for 20w18a.

Confirmed for 20w20b.

Also occurs when the player has blindness while underwater. (Graphics card is Intel HD Graphics 620.)

Confirmed in 20w22a.

Confirmed in 1.16 Release Candidate 1.

Confirmed in 1.16.2 Pre Release 2.

I've recently found that my computer has this bug, (Night Vision + Blindness / Void turning everything black) but only when on its power saving mode. (Likely due to the graphics card not being used when saving power)

This, as well as the features in 20w28a allowing me to change the fog color for custom biomes, has allowed me to find some things that should help to fix this bug (As well as the one in MC-4647, which is why I'm putting this comment there too)

Basically, Night Vision divides the fog color's RGB values (assuming they're 0 - 1) by the largest value out of R, G, or B; effectively making the fog color as bright as it can be. This works fine for most colors, but if the fog color is exactly (0, 0, 0) then the largest value in the color is 0, resulting in the color being (0 / 0, 0 / 0, 0 / 0). This calculation is why the glitch only happens on some graphics cards, as while some of them (I believe the NVIDIA ones) will set the fog color to (0, 0, 0) others may return a NaN value, resulting in (NaN, NaN, NaN). The NaN values echo through the shaders and rendering code, resulting in a ton of stuff rendering completely black.

The reason why the glitch occurs when in the void or under the Blindness effect is because both make your fog color completely black. The same effect can be achieved by making a custom biome where the fog color is 0, also showing this. A potential fix for the bug may be to add a special case in the Night Vision fog rendering code to skip the fog brightening effect if the fog color is completely black.

Confirmed in 1.16.3. Blindness + Nightvision = everything completely dark. My laptop is not on power saving mode. I do have an NVIDIA graphics card.

Confirmed in 20w48a in End Void without blindness, as I reported in MC-206739

Found this since this was placed under "Duplicated By."

Confirmed in 20w49a and 20w51a.

I didn't see text black and blocks being black.

It's visibly looks like normal but now the screen is completely turn it look like a void!

heppend in some ver in the void

Confirmed in 21w06a.

happend to me every thing black option screens to

Confirmed in 21w07a with both blindness and The Void.