This is preventing me to open tab

This keeps flashing whenever i try to click on at tab and preventing me to open it, like File or Edit. Even “Add New” on the Content Browser. and more stuff. its really annoying and will not let me get anything done. Do you now I can stop this?

i assume your talking about the file tab? you keep saying “this” which isnt very clear. have you tried minimizing then re-maxamizing the window. also have you tried closing the program then re opening it. does this issue happen with any other program? it could be a OS issue.