[Panel]: Using Custom component in Panel , [UI5 , html tags and other custom component using UI5]

[kmanisha29]

Are we not supposed to use any custom component in header prop of Panel.
Is it a requirement to use only UI5 component / basic html tags directly in header props to get expand/collapse icon .
I tried using ToolbarContainer (custom) which directly return Toolbar (UI5) with all actions, but this goes to content slot instead of header even after being used in header.
I have replicated the issue in stackblitz with multiple combinations.
Please have a look and let me know what am I doing wrong or is it a bug that
https://stackblitz.com/edit/github-dyev5j?file=src%2FApp.tsx,src%2FToolbarContainer.tsx

[kmanisha29]

Found the solution.