I regularly have more than one popup on the screen like the scenarios you mention. At the moment it is ‘shared note and census assistant’: I have three tabs (kt, ancestry, wikipedia) and two popups using alt-tab to cycle through the options. Usually only 1 alt-tab is needed to take me to the correct window. I transcribe into the census assistant window a family of 12 souls from the ancestry page underneath – I pity the poor fool who would try to do this on his mobile phone … and am (slightly) concerned about developers developing for/on 27″ screens!! I have a 15″ laptop running linux mint and have got used to the popup frustrations … I just worry I will get MORE frustrated with the alternative?