User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Error message if I open file with russian symbols in its name when at least one tab already exists in browser Reproducible: Always Steps to Reproduce: 1. Open any page in Firefox 2. "Save page as..." with russian symbols in name 3. Open saved file by double-clicking it in windows explorer (don't close the window where you save the page) Actual Results: Firefox shows an alert that a given file cannot be found. It shows a file name url encoded. Expected Results: Firefox should open a file It seems that this bug occures only if browser in one window mode, that is opens external links in new tab

I think it can be used to represent the bug

Marking as dupe of Bug 263570. Bug appears since FF 1.0. Feel free to reopen the bug if don't think it is the same issue. *** This bug has been marked as a duplicate of 263570 ***