MacOS - installed outlook owa app crashes when moving window

The “installed” version of outlook owa crashes when moving the window or using other functions.

Precondition: MacOS. I have 10.14.6 (Mojave), can’t check later versions


  1. visit:
    (Not sure if a business 365 account is required)
  2. At the end of the address bar, click the + icon
  3. Click Install to download and run locally
  4. Click the title bar and try to move the window

Actual Result: app crashes

Expected Result: app window moves. Also happens when trying other things like clicking the hamburger and going to “about”

Reproduces 100%

MacOS 10.14.6 (Mojave)
Brave: 1.20.108

Also crashes when Shields are disabled
Works fine in Chrome
clicking mail items within the window seem fine

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