Application.TickGlobalCallbacks causing issues working in Unity 2020. What is this?
A popup window in Unity with "Application.TickGlobalCallbacks" frequently, but not consistently, appears while I'm working in Unity 2020.1.1f1. It has appeared after I placed game objects in the scene or just clicked on an asset from the project folders or selected a field to edit in the Inspector pane or applied a texture layer to the terrain. It doesn't appear every time, but frequent enough to be very annoying.
All actions have to wait until this window disappears. Most of the time, the popup window disappears within a few seconds, and I can continue working in Unity. Sometimes, however, the window will show an amount of time (e.g., "busy for 8:10"); usually, when that happens, the application never recovers (I've waited overnight one time and it still said it was busy the next morning).
I don't have this issue if I'm working in earlier versions of Unity (2019 and before).
I can usually just search on Google for issues I have, but this one has me stumped. I tried searching for "TickGlobalCallbacks" but the search returns 0 results.
Does anyone know what this is?
I just updated my project to 2020 and am also getting these popup windows. $$anonymous$$ostly Application.Tick, Application.$$anonymous$$essage and Application.EnterPlaymode. They happen with a lot of actions, like like importing assets or packages, opening a scene, or (most annoying of all) entering/exiting playmode. It makes Unity unworkable.
I tried making a new 2020.1.8 project, but it still happens. I think it has something to do with the use of large Sketchup files. I never had this in previous versions.
Answer by Stents · Sep 23, 2020 at 02:00 PM
I had the same issues with 2020.1.2f1 recently when trying to attach the debugger to a project after cleaning up a lot of unused script files after some refactoring.
I deleted the Library directory and let it re-generate everything. After that the debugger finally managed to attach after waiting ~2min this time. Not sure if I just wasn't waiting long enough before... but I'm pretty sure I waited 6min+ and it was still stuck, so may be worth trying to re generate the Library dir.
Thanks! I tried deleting the Library directory before opening the project again. It regenerated the Library directory, and I have been working in the project for about an hour now and have not seen the popup with Application.TickGlobalCallBacks.
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