Bug: nl2br running Amok

hi there,

I dont think this is supposed to happen, but when I try adding more than just one line of text to the text fields for the maintenance page, and then save it, ALL new lines get a lovely br-tag added. That INCLUDES other tags as well, eg. h2.

After reediting and saving the code, MORE breaks get added!

Thus I cannot use this plugin and have it disabled and deleted ??

Version: 5.0.1
WP: 4.9.8