[GNC] Crash on exit in Gnucash 4.7-2 in macOS Big Sur

[prl]

I seem to be consistently getting a Gnucash crash when I exit (using 
either Gnucash>Quit or command-Q) from Gnucash 4.7-2 on my Big Sur 
MacBook Pro. Caused by a Segmentation Violation.

Here's a snippet from the macOS log of the crash:
Process:               Gnucash [4025]
Path: /Applications/Gnucash.app/Contents/MacOS/Gnucash
Identifier:            org.gnucash.Gnucash
Version:               4.7-2 (4.7-2)
Code Type:             X86-64 (Native)
Parent Process:        zsh [4019]
Responsible:           Terminal [4017]
User ID:               501

Date/Time:             2021-09-28 11:28:31.262 +1000
OS Version:            macOS 11.6 (20G165)
Report Version:        12
Bridge OS Version:     5.5 (18P4759a)
Anonymous UUID:        CA0735A3-3879-5356-BA71-4D9410666AF2

Sleep/Wake UUID:       9E59B9B4-5345-4236-BD83-17C01E85C186

Time Awake Since Boot: 8400 seconds
Time Since Wake:       7700 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       EXC_I386_GPFLT
Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Segmentation fault: 11
Termination Reason:    Namespace SIGNAL, Code 0xb
Terminating Process:   exc handler [4025]

I can post a full crash log as an attachment if it helps.

Any ideas, anyone?

System details:
Gnucash 4.7-2 for Intel MacOS >= 10.13, Build ID: 4.7+(2021-09-25)
macOS Big Sur 11.6
MacBook Pro (13-inch, 2019, Four Thunderbolt 3 ports), MacBookPro15,2

Cheers,
Peter