Tried to look into the dev tool a bit more. So when an exception is raised (console shows the warning), copying will be successful. However, if console shows no warning, that is when copying becomes flaky. Sometimes it still works without a warning, sometimes it just does not. Interestingly, if I turn on Debugger, for those failed copying actions I get an error: "No permission to write to clipboard". Without Debugger, no error is shown. Again, this only happens in Firefox.
|