So I'll revive that thread in the hope it pops to the start.
I'm having the same and can reproduce it by compiling wxWidgets 3.1.4 in 64bit, compiling any app with a wxTextCtrl in it and destroying that textctrl. I have some applications with a textctrl in it, and each of them crashes with the stack pointing to the destructor of locale.
The stack is:
#0 0x76f8f230 ntdll!RtlUnhandledExceptionFilter() (C:\Windows\SYSTEM32\ntdll.dll:??)
#1 0x76f8f836 ntdll!EtwEnumerateProcessRegGuids() (C:\Windows\SYSTEM32\ntdll.dll:??)
#2 0x76f90452 ntdll!RtlQueryProcessLockInformation() (C:\Windows\SYSTEM32\ntdll.dll:??)
#3 0x76f92564 ntdll!RtlLogStackBackTrace() (C:\Windows\SYSTEM32\ntdll.dll:??)
#4 0x76efa232 ntdll!RtlFreeHeap() (C:\Windows\SYSTEM32\ntdll.dll:??)
#5 0x7fefee710c8 msvcrt!free() (C:\Windows\system32\msvcrt.dll:??)
#6 0x12a44bd std::locale::_Impl::~_Impl() () (C:\wxGccTDM314\lib\gcc_dll64\wxmsw314ud_core_gcc_cb.dll:??)
#7 0x12a4920 std::locale::~locale() () (C:\wxGccTDM314\lib\gcc_dll64\wxmsw314ud_core_gcc_cb.dll:??)
#8 0x1153e0f wxTextCtrlBase::~wxTextCtrlBase(this=0xc01dc70, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../include/wx/textctrl.h:693)
#9 0xe49951 wxTextCtrl::~wxTextCtrl(this=0xc01dc70, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../src/msw/textctrl.cpp:354)
#10 0xe49991 wxTextCtrl::~wxTextCtrl(this=0xc01dc70, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../src/msw/textctrl.cpp:365)
#11 0xf45f26 wxWindowBase::Destroy(this=0xc01dc70) (C:\wxGccTDM314_64\build\msw/../../src/common/wincmn.cpp:578)
#12 0xf46085 wxWindowBase::DestroyChildren(this=0xc0178d0) (C:\wxGccTDM314_64\build\msw/../../src/common/wincmn.cpp:610)
#13 0xdb68ec wxWindow::~wxWindow(this=0xc0178d0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../src/msw/window.cpp:483)
#14 0x117bdd8 wxNavigationEnabled<wxWindow>::~wxNavigationEnabled(this=0xc0178d0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../include/wx/containr.h:189)
#15 0x1135e4a wxPanelBase::~wxPanelBase(this=0xc0178d0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../include/wx/panel.h:30)
#16 0x11c0d26 wxPanel::~wxPanel(this=0xc0178d0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../include/wx/msw/panel.h:19)
#17 0x11c0ce5 wxPanel::~wxPanel(this=0xc0178d0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../include/wx/msw/panel.h:19)
#18 0xf45f26 wxWindowBase::Destroy(this=0xc0178d0) (C:\wxGccTDM314_64\build\msw/../../src/common/wincmn.cpp:578)
#19 0xf46085 wxWindowBase::DestroyChildren(this=0xbfddae0) (C:\wxGccTDM314_64\build\msw/../../src/common/wincmn.cpp:610)
#20 0xdb68ec wxWindow::~wxWindow(this=0xbfddae0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../src/msw/window.cpp:483)
#21 0xe85fb8 wxControlBase::~wxControlBase(this=0xbfddae0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../src/common/ctrlcmn.cpp:48)
#22 0x11e7c8c wxControl::~wxControl(this=0xbfddae0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../include/wx/msw/control.h:17)
#23 0x114d347 wxBookCtrlBase::~wxBookCtrlBase(this=0xbfddae0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../include/wx/bookctrl.h:55)
#24 0x1152aa3 wxNotebookBase::~wxNotebookBase(this=0xbfddae0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../include/wx/notebook.h:103)
#25 0xe2552d wxNotebook::~wxNotebook(this=0xbfddae0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../src/msw/notebook.cpp:296)
#26 0xe25553 wxNotebook::~wxNotebook(this=0xbfddae0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../src/msw/notebook.cpp:302)
#27 0xf45f26 wxWindowBase::Destroy(this=0xbfddae0) (C:\wxGccTDM314_64\build\msw/../../src/common/wincmn.cpp:578)
#28 0xf46085 wxWindowBase::DestroyChildren(this=0xbfdd1e0) (C:\wxGccTDM314_64\build\msw/../../src/common/wincmn.cpp:610)
#29 0xdb68ec wxWindow::~wxWindow(this=0xbfdd1e0, __in_chrg=<optimized out>) (C:\wxGccTDM314_64\build\msw/../../src/msw/window.cpp:483)
My locale is german.
32bit is fine, been using it for quite some time, apps are running fine and stable in both win7 and win10.