Dear Lyx developers, I'm not sure if any of you are aware of this bug. I'm using the latest 2.2.3 Lyx on Mac. And whenever Lyx is in macOS' native full screen mode (using the green button on the title bar, not the View->Full Screen), the document tab row will disappear mysteriously whenever a new document is created or the current tab is closed. This is annoying since one cannot switch between tabs any more. The problem will persist even if one exit the full screen mode. The only way to make the tab row reappear is to first exit the full screen mode, then enter the full screen mode using View->Full Screen, and then do View->Full Screen again (uncheck).
To me, this bug has to do with the fact that there are two full screen modes. The native one by clicking the full screen icon at the title bar will not hide the toolbars nor the tab bar, but the full screen mode via the View menu will hide everything except the document itself. The bug yields a messed-up situation where all the tool bars are showing, but the document tab bar is hidden, which belongs to neither of the two full screen modes. P. S. I'm not talking about the Tab Bar under the View menu that is introduced by macOS Sierra. I'm talking about the tabs enabled in Preferences->Document Handling. Can anyone look into this? Thanks a lot! Zhexuan