Cannot delete from formula field, but can add new text

[GeorgiGeorgiev4]

Hello, 

I have a report that I used to be able to modify. Now, when I select a column and try to modify the formula it is not possible to change or delete existing text. I can only add new text:

 Has anyone encountered this issue? I cannot fix something and it is driving me crazy...

[GeorgiGeorgiev4 · Accepted solution]

Received a new version of powerBI and after update issue fixed itself.