How to reproduce:
- Go to https://commons.wikimedia.org/wiki/Special:UploadWizard
- Proceed until the "describe" step
- Enter an invalid title, e.g. containing a "["
- UploadWizard will throw:
Error: Unable to parse title
https://bits.wikimedia.org/commons.wikimedia.org/load.php?debug=false&lang=en&modules=jquery%2Cmediawiki%2CSpinner%7Cjquery.triggerQueueCallback%2CloadingSpinner%2CmwEmbedUtil%7Cmw.MwEmbedSupport&only=scripts&skin=vector&version=20140505T003542Z
Line 206
Expected: Error message in UI and not in JS console :P
Version: unspecified
Severity: normal