If a view is shown again, it's rendered after the responsiveCell: false view.
I can confirm the issue, thank you for reporting. We will investigate and try to provide a fix in future releases.
For the time being, you can try a dynamic tabbar with a more reliable behavior of its responsive tabs: https://docs.webix.com/samples/20_multiview/10_many_tabs.html
Like in your sample, tabs are pushed to a popup when the space is not enough. However, all tabs are responsive by default, and there isn't any way to control it.
Another way is using Webix FlexLayout, if you are ready for limited browser support.
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