UNDO not working with text tool

[saurabhshr123]

Hello,

I just selected text tool and write some text then hit "undo all" then it's not working, But I saw when I click again on screen then "undo all" works. After undo all when I'm trying to write something then it's not working. In that case I need to select text tool again. Please provide your suggestions on that. I just want if I "UNDO ALL" then click again I should be able to write.

Thanks.