@tina ok, I understand.
I'm asking only about History and Bookmarks panels because, in my opinion, these two panels are similar to the other such parts of the UI as bookmarks bar dropdowns, downloads popup or the heart popup and shouldn't be handled as 'web pages'
On 1920x1080 monitor it fits less information when I set to 125% in Settings (I use it as default page zoom) and it is need to extend panel each time or keep it always too wide. And more scrolling also.
For example, internal Downloads page reacts on page zoom but the toolbar's downloads popup does not. That's what I'm talking about.
Edge also has History/Bookmarks popup which can be pinned as panels but these panels do not react on page zoom in Settings and this is correct. Maybe I'm wrong.