When a field label is longer that the width of the slushbucket and you try to personalize the list with this field label, the slushbucket is resized, and can partially or completely hide the "<" and ">" buttons used to move a field between the slushbucket lists.
Steps to Reproduce
1. Open the instance using Microsoft Edge.
2. Add a new field to the incident form with a long field label, for example, "This field name is unnecessarily long and will break the slushbucket".
3. Open a list view and open the Personalize List Columns option.
Note that the left column is wider than usual and the two arrows that normally appear between the columns are hidden.
Use a browser other than Microsoft Edge.
Related Problem: PRB953283