Thanks for the additional information. I can confirm this is a defect. It will be fixed in the next release.
-- 73, Joe, K1JT
Hi Joe I also managed to invoke this "defect" last night on FT8 using V2.4.0 I manually changed TX5 to say "KV4BV JO02 73" but the actual transmitted message was "KV4BV JO02 60" as seen on my own yellow transmitted message box and by a friend who monitored it being sent on air. Guess I if I had tried to send G4NBS JO02 73 it would have behaved normally?