Tabs are not linking to application

My tabs stopped working for no reason. this error is happening even on new empty project. Issue is that whenever im trying to link application to new tab, it always links to first tab. For example i have 2 tabs called “A” and “B”, i link application to tab “A”, everything is ok. But when i link another or same application to tab “B”, it links to tab “A” again.Here is screenshots of error: