#87 Website e-mfc.ru 100% CPU in FF
Closed: Insufficient Data 8 months ago by polcak. Opened a year ago by uxerre.

https://e-mfc.ru/ — website for documentational interoperation between the state and citizens.
100% CPU utilization, or almost 100%, and web browser turns hardly responsive.

Encountering the issue in FireFox 107.0 and 102.5.0esr, both 64-bit.
Chromium seems to work fine.
Without JShelter FireFox works fine on the website.

JShelter Version: 0.11.1
OS: OpenBSD 7.2 amd64
Other extensions that might affect JShelter behaviour: tested with all others off

Popup information (open JShelter popup on affected pages):
Doesn't open for over a minute.
Didn't set any custom options — have kept all defaults.


I was not able to connect to the site. Maybe it is geoblocked.

Nevertheless, some wrappers need additional performance, for example see #17. I am not sure what is the purpose of the website but maybe you need to identify anyway. One possibility is to select the Strict level in the JS Shield details options page. Just add the "e-mfc.ru" domain to the list with that level.

Please read FAQ and linked blog posts for further information how the fingerprinting protection works.details on

Metadata Update from @polcak:
- Issue tagged with: broken page, cannot reproduce, performance issue

a year ago

I cannot connect to the size and reproduce the issue.

Metadata Update from @polcak:
- Issue close_status updated to: Insufficient Data
- Issue status updated to: Closed (was: Open)

8 months ago

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