You can start Firefox with temporary clean profile by a command line `-profile`, like: `"C:\Program Filex (x86)\Mozilla Firefox\firefox.exe" -no-remote -profile "%Temp%\FirefoxTemporaryProfile"`
Then, please report the bug with these information:
## Feature requests can be tagged as "out of purpose"
Please see [the readme page](./README.md) before you post a new feature request.
Even if a requested feature is very useful, it is possibly rejected by the project policy.
Instead, please tell me other addon which provide the feature and report a new issue as "compatibility issue with the addon, TST should work together with it".
## Translations, pull requests
If you've fixed a problem you met by your hand, then please send the difference as a pull request.
And, if you translated TST for your language, please feedback it for me as a pull request.
You'll be able to do it without any local application - you can do it on the GitHub.