Sorry for my English if that...

I called for more help.

How did you call up that information?

Separate Security Issue: Update your Flash Player or remove it using these links; http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html Uninstall Flash Player | Windows http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-mac-os.html Uninstall Flash Player | Mac

Note: Windows users should download the ActiveX for Internet Explorer. and the plugin for Plugin-based browsers (like Firefox).

Note: Windows 8 and Windows 10 have built-in flash players and Adobe will cause a conflict. Install the plugin only. Not the ActiveX.

Flash Player Version: Version 29.0.0.113

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only> +++++++++++++++++++ See if there are updates for your graphics drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

How to reproduce the case? There are files "index.html" and "художник.js".

In simple case "index.html" with code <script src="художник.js"></script>

"художник.js" with code console.log("2");

That's all

Sorry for the delay. I called for more help.

I see that, too (screenshot attached). When did this start -- with Firefox 59?

Assuming it's not a setting or add-on we both share, I suggest posting on the Dev Tools forum over here to see whether it's a known issue:

https://discourse.mozilla.org/c/devtools