Hi Dimo,

Thanks for the sample, appreciate the time and effort put into it. The example you provided works great as all of the data is loaded in the model and there is no further interactions with the components. Let me give you some context which might highlight the problem I have. Added a REPL link for assistance.

https://blazorrepl.telerik.com/wHatlllo00Ba3lXw33

Basically the idea is this. We have a window with multiple controls in it, most of which containing MultiSelects. Each of these components is responsible for getting its own data, in order to promote re-usabililty. Populating numerous MultiSelect components from a database can be quite expensive, so such data is ideally loaded on screen load whilst the window is hidden and persisted throughout the lifetime of the page. As is, the current implementation would result in the data reloaded each and every time the window is hidden and shown again.

When it comes to presentation, we are after a window being shown as a modal, so with a backdrop blocking anything behind the window when the window is visible, and completely hidden when not visible, allowing the user to resume working on whatever was in the background. Minimzing the window when set to modal will still leave backdrop and the window's titlebar visible when minimized, resulting in both approaches not fitting our case. Hence the recommendation that PersistContent should behave the same for window minimzed and hidden.