"Switch Starting Point and Ending Point" may crash

Fresh EmEditor 17.0.0 portable, and also launch Chrome browser
1. Type 12345679
2. Press Ctrl + A (Select 12345679)
3. Press and hold Left-Shift
4. Press Left -> F8 -> Right -> F8 -> Left -> F8 -> Right -> F8 -> Left -> F8 -> Right -> F8
(Now, release Left-Shift, and it will select 456 only)
5. Click menu Help – Keyboard map – Keyboard properties – Press New Shortcut Key text box
6. Press Shift + F8
7. Switch to Chrome browser, and back to EmEditor
8. Repeat step.7 few times, it may cash.
Not always, but I can reproduce this crash many times.
======================error log as below==============
*** Unhandled Exception!
ExpCode: 0x00000000C0000005
ExpFlags: 0
Version: 17.0.0 (64-bit)
Notes: Main ExceptionFilter

SymInit: Symbol-SearchPath: ‘.’, symOptions: 530, UserName: ‘xxx’
OS-Version: 6.1.7601 (Service Pack 1) 0x100-0x1
xxx\EmEditor.exe:EmEditor.exe (0000000140000000), size: 1847296 (result: 0), SymType: ‘-nosymbols-‘, PDB: ‘xxx\EmEditor.exe’
C:\Windows\SYSTEM32\ntdll.dll:ntdll.dll (0000000077150000), size: 1744896 (result: 0), SymType: ‘-exported-‘, PDB: ‘C:\Windows\SYSTEM32\ntdll.dll’
C:\Windows\system32\kernel32.dll:kernel32.dll (0000000077030000), size: 1175552 (result: 0), SymType: ‘-exported-‘, PDB: ‘C:\Windows\system32\kernel32.dll’
C:\Windows\system32\KERNELBASE.dll:KERNELBASE.dll (000007FEFD010000), size: 434176 (result: 0), SymType: ‘-exported-‘, PDB: ‘C:\Windows\system32\KERNELBASE.dll’
C:\Windows\system32\GDI32.dll:GDI32.dll (000007FEFD310000), size: 421888 (result: 0), SymType: ‘-exported-‘, PDB: ‘C:\Windows\system32\GDI32.dll’ ……………