spider High Availability Setup, after crash one node,the other can't be update from spider on crash node table.

I test high availability setup,and has questions below:

 PARTITION pt1 COMMENT = 'srv "backend1 backend2_rpl",  mbk "2", mkd "2", msi "49161", link_status "0 0"',
 PARTITION pt2 COMMENT = 'srv "backend2 backend1_rpl",  mbk "2", mkd "2", msi "49161", link_status "0 0" ' 

then pt1 host crash,spider host can dml use pt2 host. but I can dml server backend2,only can insert/delete server backend2_rpl table,can't update backend2_rpl table only.

I test this on mariadb 10.0.23 and 10.1.23,the same result. what's the reason? thanks.

Answer Answered by Ian Gilfillan in this comment.

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