use tabcontainer as a child in the easyrefresh widget, the easyrefresh's header will block

[steven-gao]

hi, when i use tab_container as a child in the EasyRefresh widget, the EasyRefresh's header will blocked,and the color not correct.
I started to wonder if it was a problem with the pull-down refresh component, so I tried it using the TabBar in the Flutter SDK, and it worked fine.
if i not put a list in TabContainer，that ok. I can't find the reason. So come for help
the video as belows

12.18-headerblock.mp4

and my code as belows:
Uploading code.zip…

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