It was mentioned in the past that typing in a text field on some sites such as reddit leads to a plonk sound, and I too noticed it and I got a recording of it, surprisingly recording sound it hard, but I used a few programs to capture the sounds and then use them as a mic input in QuickTime, leading to this video with sound 
So far this is on my end reproducible on the comments in Reddit,
The specific field I used is found on here
But I am pretty sure it works on any thread (Not yet sure)
Orion: Version 0.99.107-beta (WebKit 613.1.3)
MacOS: 12.0.1 (21A558)