Sound glitches from all software after visit on some sites with Firefox

Hello, KDE prof’s!

Steps for reproduce:

  • Turn ON PC
  • Launch Audacious player
  • Launch Firefox
  • Visit to drupal org

And I have sound glitches like on radio tuning. From all software, that have sounds: players, browser, messengers. Glitches disappear after restart. I find only 2 sites, that make it: drupal org and my local bank. With Chrome - no problems.

Without Audacious glitches can be to, but not in 100% of cases.

OS: KDE Neon
Plasma 6