Bug 1805908 Comment 7 Edit History

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Original comment by
on 
(Drive-by since I looked at bug 1806913 already)
Here's an example with media query listener.
Error message is not popped because the message path [here](https://searchfox.org/mozilla-central/rev/a487112616e7e6d03a39877a3d317d0e46f8278a/toolkit/actors/PrintingParent.jsm#11,14) is broken. Console shows "JavaScript error: resource://gre/actors/PrintingParent.jsm, line 14: TypeError: can't access property "ownerGlobal", browser is null." I think it's due to being a mainthread based tab, but the "unbroken" behaviour isn't really better as shown in this test case as well as bug 1806913.
Revision 1 by
on 
(Drive-by since I looked at bug 1806913 already)
Here's an example with media query listener.
Error message is not popped because the message path [here](https://searchfox.org/mozilla-central/rev/a487112616e7e6d03a39877a3d317d0e46f8278a/toolkit/actors/PrintingParent.jsm#11,14) is broken. Console shows `JavaScript error: resource://gre/actors/PrintingParent.jsm, line 14: TypeError: can't access property "ownerGlobal", browser is null.` I think it's due to being a mainthread based tab, but the "unbroken" behaviour isn't really better as shown in this test case as well as bug 1806913.

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