TextMesh Pro Massive lag in editor when selecting Text

So this has been happening for a while now, I'm using Unity 2017.4 but this issue has existed since 2017.3. I realize there's a new version in 2018.x through package manager. But wanted to see if there's a workaround to my issue with the 2017 version.

When selecting text (first time only) there's a 120 second lag in the editor before the inspector updates. Here's a screenshot:



121172.98ms in the TMP_UiEditorPanel.OnEnable method!

Any ideas why this method is taking so long? Again, it's only happening the first time, but still it's very frustrating to wait 2 minutes before I can edit some text.

The dll version is: TextMeshPro-2017.3-1.0.56-Editor

 

Let's see if we can isolate whatever is causing this behavior.

Does this happen with all text objects including in a newly created scene with a single text object?

If yes, does this happen in a new project and new scene?

 

Ok, so I created a new project, no issue. The only difference was the location of TextMeshPro. At some point I must have placed TMP in the Standard Assets folder. Moving it out to the root directory fixed the issue

 

It is kind of strange that being in this alternative location would cause such a delay on object selection. This is something I will have to look at as although unlikely related to TMP, might be exposing some other issue in the editor.