I was going to say 12.0.76 (just last night done 6.12.65-30 upgrade)
This reversecharge warning was at some point quite sticking out (for quantity of it) it looked like it appeared for every run of the time checking condition - full.log was,well, f u l l of it, even though I don't have that many calls logged - but this seems to be gone with some earlier upgrade - so now I hope this finds way to my distro/modules, some time
Thanks @tm1000 Andrew