Plumsail Forms can be opened in a panel, similar to default SharePoint forms, preserving all custom functionality, including routing.
Opening a form in a panel is enabled by default for all form types. You can individually adjust the panel settings for New, Edit, and Display forms in form Settings → General tab.
Define whether a form should open fullscreen or in a panel, and choose the panel size:
The Apply to List web part setting determines whether forms opened from List and Document library web parts should also be opened in a panel:
Note
To open a form in a panel, make sure the web part command bar is enabled in the web part setting: