Regression: Thunderbird crashes while trying to download an email.

Official 43929.
It was working for certain in ~37000.

(dll/win32/kernel32/except/except.c:407) Missing function in : shell32.dll
(dll/win32/kernel32/except/except.c:408) with the functionname : SHSetUnreadMailCountW
Unhandled exception
ExceptionCode: 80000100
Address: 7c70213b C:\ReactOS\system32\kernel32.dll
CS:EIP 1b:7c70213b
DS 23 ES 23 FS 3b GS 0
EAX: 00d5f7c0 EBX: 80000100 ECX: 00d5f500
EDX: 00000000 EBP: 00d5f818 ESI: 00d5f830 ESP: 00d5f7c0
EDI: 029ca2d8 EFLAGS: 00200246
Frames:
6a360000+48e60 C:\ReactOS\system32\SHELL32.dll
6a360000+49016 C:\ReactOS\system32\SHELL32.dll
400000+488ba9 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+488ff4 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+448804 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+56c26d C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+513309 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+565e26 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+51ec9b C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+50c685 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+572de6 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+578210 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+577cbd C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+578943 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+5555d8 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+8f365 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
400000+8f211 C:\Program Files\Mozilla Thunderbird\thunderbird.exe
60370000+209ef C:\Program Files\Mozilla Thunderbird\xpcom_core.dll
778b0c24<invalid address>
(subsystems/win32/csrss/api/wapi.c:115) CSR: received hard error c0000144
(subsystems/win32/csrss/win32csr/dllmain.c:526) The exception U (0x80000100) occurred in the application at location 0x7c70213b.