https://bugs.kde.org/show_bug.cgi?id=442674
Bug ID: 442674
Summary: Extension side-effects on unsupported platforms
Product: plasma-browser-integration
Version: unspecified
Platform: Other
OS: macOS
Status: REPORTED
Severity: major
Priority: NOR
Component: Firefox
Assignee: k...@privat.broulik.de
Reporter: rjvber...@gmail.com
Target Milestone: ---
SUMMARY
Certain browsers, Firefox and Waterfox included have an option to sync
installed extensions across hosts and platforms. One an thus end up with the
Plasma Integration extension installed on, say, Macintosh.
STEPS TO REPRODUCE
1. Launch the browser (Firefox or Waterfox, possibly any other supported
browser) on Mac *from a terminal*
2. Install the extension (directly or indirectly by installing it on a Linux
host where the browser syncs with the Mac in question)
3. Play a video (e.g. on YouTube)
OBSERVED RESULT
The terminal fills with
```
JavaScript error:
moz-extension://2651658f-3b08-9242-8969-bbac66dafd06/extension-utils.js, line
0: Error: can't access property "postMessage", port is undefined
JavaScript error:
moz-extension://2651658f-3b08-9242-8969-bbac66dafd06/extension-utils.js, line
0: Error: can't access property "postMessage", port is undefined
JavaScript error:
moz-extension://2651658f-3b08-9242-8969-bbac66dafd06/extension-utils.js, line
0: Error: can't access property "postMessage", port is undefined
```
It seems 1 such line is printed for every frame in the video.
EXPECTED RESULT
No such pollution, which must have a performance impact on video playback
SOFTWARE/OS VERSIONS
macOS: 10.9.5
ADDITIONAL INFORMATION
I have hardware acceleration disabled in my browser (Waterfox) on Mac but don't
think that changes anything for this issue.
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