In IE (11) on a disabled pulldown field in this file we have the JavaScript error: isPatternMismatched is not defined. Initializing the field solves the problem.
The isDisabled variable is unused, so removed this as well.
Testing Instructions
Will follow, creating this PR so this change won't get lost. If you look at the code itself you can see the coding mistakes.
@C-Lodder Thank you for reminding me of this PR. I am going to close it because I made this for @ottoh001 and since he is not responding. No use to pursue it.
Please provide test instruction
This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/10747.