The problem with git rebase

made a git library with only one file A.txt, which branches as shown in the figure. The problem is that in rebase test3, a branch of master, 4455 66 can be added to test3, while rebase test4 has only 44 points that can rebase to test4,

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test3 A.txt

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test4

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masterA.txt:

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git Library:
https://github.com/wangkeshan.

Nov.01,2021

the specific reason has been located because of the contents of the file, which may cause git to think that the changes of 5566 and 66 can be ignored, but why git thinks so? I don't understand

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-64f5-1e43527-44a24.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e43527-44a24.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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