Which language version of FF did you install?

British, as I install for a dozen years (since Phoenix).

This bug appears several times this year or another, then it sounds be fixed, then reappears again.

Additional report: in ver.59 this bug is related to address bar too.

To submit suggestions for new or changed features, may I suggest: Feedback: https://qsurvey.mozilla.com/s3/FirefoxInput/ or https://discourse.mozilla.org/c/add-ons If you have a bug, file a bug report. https://bugzilla.mozilla.org/ Bug Writing Guidelines : https://developer.mozilla.org/en-US/docs/Mozilla/QA/Bug_writing_guidelines

Are you switching the keyboard layout to Russian or are you using other ways to type these characters?

Can you paste these characters in the location/address bar or does that fails as well?

Hello!

Pasting is ok.

It's the typing process that has flaws.

I can type-in almost all Russian lowercase letters except listed above into:

• web-search
• in-page-search
• address-bar
• plugin-search
• find-in-options
• home-page-url
• save-files-to-downloads-field
• content-handling-applications
• manual-proxy-configuration
• device name for sync

All these places revoke typing "хъжэбю". It seems that system input fields of Firefox are all coded the same way.

I can type-in completely all Russian uppercase letters, including "ХЪЖЭБЮ".

I noticed this retrobug in Fx 58.some. I rechecked this bug in Fx 52ESR - everything is ok, correct, flawless.

I haven't installed all the versions from 57 all the way down to 52 to limit bug scope. And I haven't checked this bug in 58..59Russian or x32 (could try in spare time).

And I remember this bug in some versions during long history of Phoenix/Firebird/Firefox.

It would be better to create a bug report on https://bugzilla.mozilla.org/enter_bug.cgi and provide here a bug number.

1446822