[Desktop] Crash while executing PWA

OS : macOS 10.15.4 Version : 1.5.15 & 1.5.23

Unfortunately, Brave crashes when running PWA applications. I was able to log in from app_mode_loader.

Note that this problem exists in all PWAs Tested PWAs: YouTube music & twitter & clickup

NOTE: Unfortunately, the problem report is not received in brave: // crashes.

Please fix this bug

2020-04-03 13:05:16.096 app_mode_loader[4792:52753] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSAccessibilityRemoteUIElement accessibilityTitle]: unrecognized selector sent to instance 0x7fa03de2f230'
*** First throw call stack:
(
	0   CoreFoundation                      0x00007fff34322d07 __exceptionPreprocess + 250
	1   libobjc.A.dylib                     0x00007fff6d0475bf objc_exception_throw + 48
	2   CoreFoundation                      0x00007fff343a1c97 -[NSObject(NSObject) __retain_OA] + 0
	3   CoreFoundation                      0x00007fff3428757b ___forwarding___ + 1427
	4   CoreFoundation                      0x00007fff34286f58 _CF_forwarding_prep_0 + 120
	5   Brave Browser Framework             0x0000000117639da1 ChromeMain + 80787809
	6   AppKit                              0x00007fff315d1eba -[NSAccessibilityAttributeAccessorInfo getAttributeValue:forObject:] + 58
	7   AppKit                              0x00007fff31b8f7c9 ___NSAccessibilityEntryPointValueForAttribute_block_invoke.805 + 1674
	8   AppKit                              0x00007fff31b8b614 NSAccessibilityPerformEntryPointObject + 16
	9   AppKit                              0x00007fff3184f7d1 _NSAccessibilityEntryPointValueForAttribute + 168
	10  AppKit                              0x00007fff31990c53 -[NSObject(NSAccessibilityInternal) _accessibilityValueForAttribute:clientError:] + 351
	11  AppKit                              0x00007fff31995d6e CopyAppKitUIElementAttributeValueNoCatch + 98
	12  AppKit                              0x00007fff31992c52 CopyAttributeValue + 142
	13  HIServices                          0x00007fff325853f6 _AXXMIGCopyAttributeValue + 389
	14  HIServices                          0x00007fff325a64bb _XCopyAttributeValue + 443
	15  HIServices                          0x00007fff32565f64 mshMIGPerform + 174
	16  CoreFoundation                      0x00007fff342a74c4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 41
	17  CoreFoundation                      0x00007fff342a7410 __CFRunLoopDoSource1 + 541
	18  CoreFoundation                      0x00007fff342a5f39 __CFRunLoopRun + 2270
	19  CoreFoundation                      0x00007fff342a4ffe CFRunLoopRunSpecific + 462
	20  HIToolbox                           0x00007fff32ed8abd RunCurrentEventLoopInMode + 292
	21  HIToolbox                           0x00007fff32ed87d5 ReceiveNextEventCommon + 584
	22  HIToolbox                           0x00007fff32ed8579 _BlockUntilNextEventMatchingListInModeWithFilter + 64
	23  AppKit                              0x00007fff31523c99 _DPSNextEvent + 883
	24  AppKit                              0x00007fff315224e0 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1352
	25  AppKit                              0x00007fff315141ee -[NSApplication run] + 658
	26  Brave Browser Framework             0x000000011598598c ChromeMain + 50689356
	27  Brave Browser Framework             0x00000001159843f2 ChromeMain + 50683826
	28  Brave Browser Framework             0x0000000115930637 ChromeMain + 50340343
	29  Brave Browser Framework             0x0000000115907427 ChromeMain + 50171879
	30  Brave Browser Framework             0x000000011292e086 ChromeAppModeStart_v6 + 2182
	31  app_mode_loader                     0x000000010ff1b84b main + 2443
	32  app_mode_loader                     0x000000010ff1aedb main + 27
	33  libdyld.dylib                       0x00007fff6e1eecc9 start + 1
	34  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
[0403/130516.114433:WARNING:process_memory_mac.cc(93)] mach_vm_read(0x7ffedfce6000, 0x2000): (os/kern) invalid address (1)
[0403/130516.270392:WARNING:system_snapshot_mac.cc(42)] sysctlbyname kern.nx: No such file or directory (2)
[1]    4792 abort    

[TrevorSayre]

Please also see the discussion in this bug report for BetterSnapTool: https://community.folivora.ai/t/bettersnaptool-and-bettertouchtool-cause-brave-web-browser-apps-to-crash/12299

unfortunately that’s a bug in Brave Browser where it doesn’t seem to implement a specific functionality of the standard macOS accessibility API (or is forwarding the request to some wrong object) . This can’t be fixed in BetterSnapTool 😦

The specific selector that should be available, but unfortunately isn’t is „accessibilityTitle“

Maybe Brave uses a different kind of custom window for more customisability or something like that. In that case they should either disable Accessibility support completely for that window or implement all the required methods (or at least add stubs so it won’t crash when macOS calls them).

While it may be people in this thread discussing issues with window managers, this hints at a greater accessibility issue which could be affecting users with other assistive technology when trying to use Brave with PWAs. That would make this rather a serious issue.

Chromium seems to be handling this fine: https://github.com/chromium/chromium/search?q=accessibilityTitle&unscoped_q=accessibilityTitle

[andyjw7]

I have been experiencing the same issue and quite by chance I have discovered that it only happens when I have a productivity app called Window Tidy running. This is an app I’ve used for years to organise and resize apps on my desktop. I have never had an issue with it in the past, and I use it all the time - in fact I couldn’t live without it.

I doubt all the other users reporting this issue are using the same app, but maybe there is a common theme of apps that manage desktop layout, or something like that?

Window Tidy is still available in the App Store should anyone want to install for debugging purposes. It has actually been superseded by another app by the same developers so I may try the free trial of that and report back on my findings.