I am running Band-in-a-Box® for Macintosh Version 2021 (515) 64 bit application.

Yes, the attached image (above) titled "Editable Mode" shows the correct notation of the triplet; i.e., a rest on the 1st sub-division, followed by a note on 2nd and 3rd sub-divisions of the triplet.

After I exit from Editable mode and return to Regular Notation Mode, the notation is changed; the triplet (on beat 3) has been replaced (incorrectly) by a pair of eighth notes. See the iimage included above, titled "Notation Mode".

Note that the file plays back correctly (as per the rhythm indicated in the Editable notation). The Editable Mode notation and the playback rendering are in agreement. It is only the non-Editable notation that is displayed incorrectly.

Is there a work-around for this issue? As mentioned, I've tried to solve the problem by setting different tick offset values, but have not succeeded in getting the notation to show correctly.