Apex Upgrade 4.1.0.00.32 to 4.1.1.00.23 issues with javascript URL redirect

Since the upgrade executing a javascript via a command button causes the 'Error on page' icon to appear at the bottom of the screen.

Currently the button is setup to to perform the following action when the button is clicked:

Action: Redirect to URL

Execute validations: Yes

URL Target:

javascript:void JPATS.jmis.page6.commentPopup(%27{%22commentType%22:%22GEN%22,%22moveId%22:%22&P6_MOVEID.%22,%22mode%22:%22USER%22}%27);

The problem is when clicking on the command button produces an error due to the executing the following script (notice the scripts do not match):

javascript:void%20JPATS.jmis.page6.commentPopup(%2527%7B%2522commentType%2522:%2522GEN%2522,%2522moveId%2522:%2522&P6_MOVEID.%2522,%2522mode%2522:%2522USER%2522%7D%2527);