When Mini Program returns the page with wx.navagiteBack, why does the middle one flash when he returns to multiple layers? is there any solution?

there is a jump from a to b, from b to c, and from d to d. If you want to jump from d to a, you can call wx.navigateBack ({delta:3}) in the onunload of d, but you will always flash the b page when you jump. How to solve this problem?

Apr.29,2021
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-64f5-1e9c258-465f6.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e9c258-465f6.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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