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    Bug 
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    Resolution: Tracked Elsewhere
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    Medium 
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    None
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    5.0.5
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    None
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    Firefox 13 
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        5
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Steps to reproduce:
- Create a new issue
- Start typing [~[
- Bug: mentions stops working an throws a JavaScript error: "invalid rang in character class"
After clearing the text, the error is thrown again and again, even when entering previously working expressions like @admin or [~admin]. Only a page reload is helping.
- Discovered while testing
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                    JRASERVER-28925 Mentions drop-down gets stuck if I type @ while trying to mention -         
- Closed
 
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- is related to
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                    JRASERVER-27998 Mentions can fail to show results -         
- Closed
 
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