5.5b5 Top Menu disapears

Unity top menu (File|Edit|Assets|....) sometimes disapears. No way to get it back without closing Unity and relaunching....Not sure that the logs show anything useful for issue, but here is the end of it from Editor.log after menus disapeared and I closed Unity....also, layout drop down won't display when this occurs.

Event occurs sometimes when from leaving Unity Editor, going to other application window/workspace, and then returning to Unity Editor.

I'm running Linux Mint 18 mate...if that helps.

Let me know if I can provide any additonal logs or info.

debugger-agent: Unable to listen on 6
dslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
/home/builduser/buildslave/unity/build/Editor/Platform/Linux/UndoPlatformDependent.cpp:SetUndoMenuNamePlatformDependent
[usbmuxd] Stop listen thread
[usbmuxd] Listen thread exiting
process_set_termination_details: error looking up process handle 0x401

 

Just had another issues where the menu didn't disapear, but none of the menu items worked, couldn't click on top level menu items (didn't drop down). Also, right clicking on items in hierarchy only produced an empty panel. Seems related to initial issue.

 

Could it be that yours is the same issue as this one: Unity 5.5xb5 UI breaks after ~10 Minutes?

Because I'm seeing the same effects: the top menu doesn't open anymore, context menus are empty windows (and if I resize the Unity window, the panel layout does not update).

 

I'd say likely related, though my problems were not quite the same as in your original post. My issues started with 5.5xb2 when Unity would crash without warning or launching bug reporter. If I started a new project, scene, it would work for awhile, but as the scene became more complex, it would start crashing again. I thought it had to do with a corrupted prefab file that didn't get converted/upgraded correctly from previous version. Eventually found a reference to the menu in the error log, then thought it was one of my custom editor scripts.

Tak from Unity responded that it was a bug and fixed in the next beta (5.5xb5. Which it was, but then this new problem cropped up. I am assuming it was a side effect of the fix as my issue mainly deals with the menus becoming unresponsive or disappearing. Thankfully, though, I can still Control S (save) quit and restart Unity. Much better than a crash. For me it is a livable issue, but still hoping will get fixed in next release.

 

Having exactly the same issue! Having to save after every tiny mod on incase of loading work. Making it very difficult to work

 

I'm just getting the loss of top bar. But certain it's related