Comment 7 for bug 1880710

For reference, I'm attaching a complete log file provided by Natalia, suitably trimmed off irrelevant/private information, beginning where the errors started occurring.

This is the beginning of that log file:

[3837270:3837270:0609/103951.281220:ERROR:shared_image_representation.cc(151)] Attempt to read from an uninitialized SharedImage
[3837270:3837270:0609/104212.270228:ERROR:gl_context_glx.cc(227)] Couldn't make context current with X drawable.
[3837270:3837270:0609/104212.273762:ERROR:gles2_command_buffer_stub.cc(327)] ContextResult::kTransientFailure: Failed to make context current.
[3837270:3837270:0609/104212.275364:WARNING:x11_util.cc(1522)] X error received: serial 78991, error_code 170 (GLXBadContext), request_code 154, minor_code 26 (Unknown)
[3837270:3837270:0609/104212.276739:WARNING:x11_util.cc(1522)] X error received: serial 78993, error_code 170 (GLXBadContext), request_code 154, minor_code 4 (Unknown)