Finale 26.0.0.703; Mac Mojave 10.14; Roland A-49 controller via USB; Finale user since 1986 (Windows)

Just switched to Mac, so be kind. I use Finale for jazz solo transcribing so I have Transcribe app up with an mp3 file all the time and continuously toggle between Finale & Transcribe. On Windows, this was no problem as far as my MIDI was concerned. With my iMac Pro, when I bring the Transcribe app to the front, it shuts off the MIDI signal. Not only that, when I return to Finale, I can only get a MIDI single in one of two ways.
First way, I select a measure with Speedy Entry tool and the sound is back, but only while in Speedy Entry mode. If I go to another tool such as accidentals - no sound. However, if I go to Send MIDI Value under the MIDI/Audio dropdown and select "Send", I restore the MIDI signal until I toggle back to my Transcribe app. Then same thing all over again. This is never intermittent and very predictable. I contacted Andy at Seventh String who designed Transcribe and he says it's a Finale issue - not his app. By the way, play back is no issue. Chris