There are missing letters on the death screen on the Español Mexico idiome.
Steps to produce
Change idiome to Español Mexico
Load into a world
Die (I don’t know if it works with any way to die, but I died to a magma cube, so use that way)
Expected result
The “¡Has muerto!” and “Reaparición” words should be complete
Actual result
Some letters are missing (A, S, U, E, R, T, O, E, A, A, R, I, C, I, N)
Also, the word “Reaparición” isn’t properly traduced, it should be “Reaparecer” instead (Both words mean respawn, but “Reaparecer” its more used when YOU are going to respawn, and “Reaparición” its a more general term.) This is also a parity issue.
I cannot reproduce this. The debug header is not visible in your screenshot, which suggests you have a resource pack enabled. Does the issue still occur if you disable it?