Describe the bug
When I want to set a border ("Currently Editing": all) on an element I am not able to switch the unit (for example from px to em). I click on px and the popup containing the available values (px, em, rem, none) appears. But when I select em, rem or none nothing happens (at least visually) and px stays selected. When I change "Currently Editing" to a specific side (top, right, bottom or left) I can change the units as expected.
Describe the bug When I want to set a border ("Currently Editing": all) on an element I am not able to switch the unit (for example from px to em). I click on px and the popup containing the available values (px, em, rem, none) appears. But when I select em, rem or none nothing happens (at least visually) and px stays selected. When I change "Currently Editing" to a specific side (top, right, bottom or left) I can change the units as expected.
A link to a Sandbox site where the bug has been reproduced http://dark-ant.w5.wpsandbox.pro?upass=D3Jt4G4Ovw2w (Page: Borders)
Steps required to reproduce the bug
Video https://www.loom.com/share/73ba627b9410482a9f60ae2d501de436