Whenever I try to clear the text boxes in the Homebrew Monster editor, they still appear on the monster's stat block.

I have the boxes unchecked for Mythic Actions and Lair, but the titles still appear, even when there's no other text to display.

Additionally, the hexagon with the "L" that marks that this Monster has a Lair appears, even though I have the box unchecked, as mentioned above.

Can anyone help me troubleshoot this?

1. Check the box to enable the option
2. Delete the reminder text
3. Uncheck the box

And the L is for legendary, not lair. To get rid of that, uncheck "Is Legendary" once the field is cleared

Ah, well, the Legendary is intentional.

I've already deleted the reminder text. I meant that in my initial statement where I said that "Whenever I try to clear the text boxes in the Homebrew Monster editor, they still appear on the monster's stat block" and "even when there's no text to display."

Try adding some text, saving it, then removing the text and unchecking the option and saving again?

Nope, it didn't work. The titles are still there.

 What do you mean by "the titles"? Do you mean the placeholder text?

I mean the parts that say "Mythic Actions" and "Reactions" on the stat block. When I leave the fields empty in the editor, they still appear on the details page for the monster.