Why do not different webpages show in the same size on my tablet?

Configuration Frontend
1

I have some webpages in frames in Home Assistat on the tablet for my boat, SignalK (plotter interface software), Node-RED and J.River Media Center (to chose from my heavy metal and album of the day when out fishing). The app I use is Wall Panel, but that uses the regular Android web page view, which is based on Chrome, I believe. Node-RED uses the full height of my tablet, the two others do not. The tablet is an old Lenovo Tab 2 with 1280x800 pixels, and I use it in portrait mode. This is what it looks like on the tablet:

Screenshot tablet (3)
Screenshot tablet (3)800×1280 73.7 KB
Screenshot tablet (1)
Screenshot tablet (1)800×1280 24.3 KB
Screenshot tablet (2)
Screenshot tablet (2)800×1280 205 KB

The same pages are even worse on my phone:

image
image720×1584 70.7 KB
image
image720×1584 102 KB
image
image720×1584 49 KB

The phone is an OnePlus 12 with 1440x3168 pixels.
I have tried different aspect ratios, but that does not help. Can anybody please give me a pointer to what I should do to get them to use the full height of the devices?

Edit: I have experimented with the aspect ratio setting, and this is the best I can get from that.

2

Make sure that your Google Webview component is up to date.

3

It is, both on th e two weeks old phone and the 6 year old tablets.

4

I have no clue what is happening there, but I would try to play with the layout of the dashboard maybe.
Try a panel maybe.