Scheduled Transaction Edit Doesn't Enable File Save

Opened file in Homebank 5.0.3 on Linux Mint LMDE 1 64 bit.

Only transaction to perform was a scheduled interest credit on an account. From the main window, selected the listed transaction and clicked on Edit & Post button. Edited transaction detail (only Info field and Status selection required update, all other items unchanged) and clicked on Post button. HomeBank main window doesn't "activate" the Save button (the one just below the Transactions menu in the GUI) or the Save option under File menu, but I believe it should. The good news is HomeBank recognized the change and prompted to save upon selecting File -> Quit so there is a workaround to save the file.

I'm having issues compiling/updating the 64 bit machine to the latest HomeBank 5.0.6 so I tried also from my other machine running 5.0.6 on Linux Mint LMDE 2 Betsy 32 bit. Same issue remains.