https://bugs.winehq.org/show_bug.cgi?id=57126
--- Comment #6 from Ken Sharp imwellcushtymelike@gmail.com --- The new WOW64 build causes the SBOX_FATAL_CLOSEHANDLES error with CEF 32-bit but no crash (there's no crash dialog) occurs. The error is shown inside the running application (a browser window). 64-bit CEF works.
The old WOW64 build causes the same crash for both 32- and 64-bit CEF samples.
Tried Chrome 32-bit with both old and new WOW64 and 32- and 64- bit wineprefixes (where possible) and it shows the inital window but just exits silently, but it looks like Chrome loads its crashpad-handler first and seems to catch the crash. It creates a minidump which can be read with minidump-stackwalk but it means nothing to me. TLDR; I don't know.