This is very very specific and esoteric bug. The only reason I disovered it was because of the way that karjala constructed something in the fan-patch version of Fuelstat.
If you create an elevator which sends m_trigger messages to several triggers defined on the same sector, using custom event_masks, and the purpose of those triggers is to display text, the mechanism doesn't work properly.
The problem occurs with the "hockabout2" item in the patched version of Fuelstat.
In DOS version, it works fine. In TFE, it doesn't. Sorry, it's quite hard to describe and that's the best I could do As I said, it seems to be very specific to that scenario. And I could only reproduce the bug using the TEXT function. Other things appear to work fine.