It doesn't matter. The sanctions say "don't cooperate with those companies", not "unless the cooperation is harmless" or "only according to your judgment" or anything like that.

That explains why it had to happen, but says little about what our opinion about it should be.

A rule that's simple enough to understand reasonably quickly is also simple enough to mishandle some corner case.

In this case: Pity for the guys who build Putin's glide bombs.