On 18 Sep 2019, at 20:25, Curt Sellmer wrote:

I clicked in the Tab bar to select a different document. And the program
becomes unresponsive. I cannot type any characters and clicking on any
part of the editor view in Textmate has no effect.

From the sample you sent, TextMate is not doing any work, and based on your description that some functionality still work, it sounds more like internal state has been corrupted.

I’m at a bit of a loss as to what to suggest for tracking down this issue :(