EDIT: This has now been fixed, the app will ask you to upgrade.
Users on OS's that format decimal numbers with commas (and other variants of decimal numbers that differ from en/US) are affected. The cause is that we recently pushed optimisations for the rendering of the rulers in the scene view. The error happens when the zoom-level turns the labels on the rulers into decimal numbers. Obviously we forgot to test for localised numbers, which currently breaks. We are preparing a fix which should be available within an hour. The fix is both to turn off localisation but also making the rendering code more robust should anything unexpected occur. Sorry for the inconvenience!