目录或文章太长会导致，目录折叠但是展开的时候，看不完全，只能看一部分

[cold-bin]

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions. If this is a bug and you can still reproduce this error on the master branch, please reply with all of the information you have about it in order to keep the issue open.