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What I’m trying to do
I’m trying to copy in Reading View. I can’t see “copy” option in context menu in Reading view:
I solve this problem by accident after I toggle Restricted Mode of community plugins.
I reopen some reserved and disabled plugins again to try to reproduce the problem, and I didn’t make it.
Now I can just thank you for kindly response in advance, and “Toggle Restricted Mode of community plugins” may be considered to be a helpful step of debugging steps.