Acrobat duplicates text in text box, but deleting removes one copy until clicking other box

Very weird issue. 

When clicking in a text field that has text entered already, Acrobat will what looks like duplicates the current text over the top. When you press backspace to delete the text, it will remove one the duplicates characters, but it leaves the other copy in the text box still. But if you click into another box, it will remove the text that was deleted.

So if you enter the word "text" into an empty text box, it will show the word text as normal. But then if you click in another text box and then go back to the text box with the word text in it, it will put the word text over the top of the word text again. And if you delete for example "xt" from text, it will show "text" but also a copy of "te" over the te in text. Then if you click in another box, the text will then just show "te". So it does delete the text you've deleted but only shows the result after clicking in another box.

It's not a duplicate field issue and the program used is Adobe Acrobat version 25.02.05 on an ipad.