Create some variables in Plan configuration:
Notice that at the far right of the variable + value a delete 
icon is shown.
Add a variable that has a value of 100 characters:
When hovering over the 100_char value field, the content spills over the field.
Harmless, but looks sloppy:
Now add a variable with a value of 200 characters.
The delete icon is no longer shown for any of the variables:
If you want to delete a variable, clicking on its value is of no use.
The delete icon doesn't show up:
Only if you click on the long 200_char variable value, the delete icons for all variables, except 200_char itself, is shown again:
To delete the 200_char variable, you first need to change its value to a shorter one:
The delete icon then shows up for 200_char also, and you can delete it:
That workaround doesn't work if you have more than one long variable value...
Bug
Low
