The following just appeared on the dev list:
I've responded saying:
We do get occasional problems on the EN forum where a stray trailing non printing character causes unexpected problems with some formulae. I don't know how much of an issue it would be to add this, but if it is comparatively simple I'd support it; as I suspect would a few others who spend time on the forum.
This would be the time to add your $0.02 if you think this would be a good thing - either via the dev list or by vote on BZ.