Issue Summary

Jira markup will render an error such as "Color value is invalid" or "Border style is not a valid CSS2 border style" when there is invalid values in the markup

Steps to Reproduce

1. Create an issue and set the description in text mode to include {color: blue !important} 
2. Set the description to Visual mode

Expected Results

The description should ignore the second word and correctly render with the colour blue. 

Actual Results

Hi,

Testing bug

color: Color value is invalid
Thanks

Workaround

Remove the invalid markup

Versions Tested

Other Notes

This is a related to the following bug:

• This also can occur with borderStyle or any markup that has very strict regex
• JSDSERVER-15531: Tickets are getting incorrect description/comment like "Color value is invalid" when the email to create the embedded HTML that contains CSS style sheet.