If the problem reproduces, collect the logged entries in Console.Reproduce the problem (click the Clear button before each attempt at reproducing).Enter Firefox in the search box (We can also try filtering with plugin-container or with no search term at all, but there are a lot of messages streamed to the Console application.).Matthieu or anyone else that can reproduce this issue, could you try the following tests (they are two different things)?Ĭheck for errors on the Mac Console.app application (/Applications/Utilities/Console). We could check for Mac Console.app errors being logged and also check if the problem reproduces with the sandbox disabled.