Boundless Google Slides
In Google Slides, when the user has the cursor in a numeric/spinner input field such as the Size or Position input fields, using line or screen navigation inputs such as cursor keys in an empty field results in Google Slides wrapping around to the minimum or maximum value for the field.
Because these values are so large, the tab then becomes unresponsive and sometimes will hang for several minutes.
While the browser can eventually recover, it is much faster to reload the tab and try again.