I'd be very interested to see this but if it's training material for the top 0.01% of refs I think "well known" is a stretch.
If English refs have been specifically intructed to caution for this then I can't blame them.
The good book absolutely does not require a caution, and given the fact a foul tackle is now almost always not a caution, caution for handball is completely inconsistent and illogical.
Ive received that instruction in online training seminars as a grassroots ref in the US. So maybe your ire should be sent towards the training provided by the FA of County FAs.


..........................they do it to please their other halves, they take off their rings beforehand in full view of the AR and THEN put the tape on...................................................................................