Crash when opening file picker combo box above editor

I keep getting random crashes, when attempt to open the file picker combo box above the editor. I am not able to reproduce this consistently, because the crash happens intermittently. 

The crash occurs when I click to open the file picker menu. This then freezes the app and menu pane, and crashes after about 1 second.

Project Information:

• Large CMake C/C++ project
• Using clangd code model
• Using Perforce Source Control

Here's a screenshot of the widget I am talking about