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Why is some text appearing as the letter A in a box?
I already have the option checked to let the sites select their own font.
Tất cả các câu trả lời (1)
This can happen when Firefox has a problem to access locally installed fonts because of sandbox security issues.
You can set this pref to 2 or 1 on the about:config page to lower the sandbox security setting.
- security.sandbox.content.level = 1
- close and restart Firefox to make the change effective.
If '1' still doesn't have effect then try '0' to disable the sandbox.
If this didn't work then undo/reverse the change and reset the pref via the right-click context menu to the default value.
You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.