[_______]s in paper only work as a yellow, writable area in the preview and turn into a useless [] once paper is saved.

[LiteralMushroom]

---- Testmerges: ----
none, I was localhosting to see if my paper formatting would work, and found out that it only works in the preview for whatever reason????

---- Reproduction: ----

Write [______] on paper. Look in the preview to see all the _s converted into a yellow area you can write in.

Save the paper. See the yellow magically gone, leaving you with only a [].

---- Screenshots: ----

[LiteralMushroom]

coders notice me please I require functioning paperwork