On 214 these probe ends were much sought after paper weights/desk ornaments and were never admitted to have been still stuck in the drogue when the a/c landed.
The breaking off of probe ends wasn't as common after the probes were modified to the 'tulip' pattern from the original flat ended design.
We did seem to collect many more from fighters than we had from training the bomber crews. I wonder what that implies about fighter Jock's?