Vue Modal component parent-son call problem

Please help me to see where there is something wrong with this example. Click the button open always need to click the second time to let the pop-up box display again, hope to point out the key problem, thank you!

https://jsfiddle.net/HUANGJK/.

reference case
http://jsrun.net/BkpKp/edit

Javascript component vue.js

Mar.09,2021

child components do not modify properties directly. Change to the following method:
< button Vmuron update:show', false Click = "$emit ('update:show', false)" > Close < / button >

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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-64f5-1bf0ba5-31d34.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf0ba5-31d34.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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