On the iPhone, the positioning Fixed will disappear when you swipe the page, and it will appear again when it does not move. What is the solution?

as the title

on the iPhone, the positioning Fixed will disappear when you swipe the page, and it will appear again when it does not move. How to solve this problem?

I refer to the solution of ide doesn"t disappear, but I can"t detect a change in the scroll bar


add a scroll bar in the middle of the block--


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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e447a2-4c1c2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e447a2-4c1c2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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