I have written a wrapper for native SharePoint online News web-parts which combines them into a tabbed layout. A result of this is that a number of the web-parts are hidden most of the time. If the window is made smaller, the web-parts re-scale to fit the new dimensions but if the window is made larger again the hidden ones don't re-scale again.
Below is an image of the news web-part, properly scaled:
And below is a picture of the problem occurring after a resize:
My initial thought was to fix this using CSS, but it doesn't render all the content when it shows the compact layout.
Is there a way to force the web-part to resize?
It doesn't appear to respond to resizing of its parents and resizing the window is not allowed in most browsers.