Testing on https://en.wikipedia.org/wiki/The_Fighting_Temeraire?useskin=vector-2022:
| Read mode | Visual editor |
|---|---|
 |  |
Note how the whole page (including the sidebar menu and the big page title) has shifted a little bit upwards.
This happens because visual editor hides the #siteNotice banner container after opening:
| Read mode | Visual editor |
|---|---|
 |  |
We do that, because on legacy Vector and other skins, the banner container would be shown below the editing toolbar, which would be confusing to users (it kind of looks as if the banner was part of the article, and the banner becomes impossible to dismiss because that area is not clickable).
https://en.wikipedia.org/wiki/The_Fighting_Temeraire?useskin=vector&banner=shesaid_2022
| Read mode (legacy Vector with banner) | Visual editor | Visual editor if the banner wasn't hidden |
|---|---|---|
 |  |  |
However, on Vector 2022, this would not be a problem, as the banner container is above the toolbar. I think we could just let it stay visible:
https://en.wikipedia.org/wiki/The_Fighting_Temeraire?useskin=vector-2022&banner=shesaid_2022
| Read mode (Vector 2022 with banner) | Visual editor | Visual editor if the banner wasn't hidden |
|---|---|---|
 |  |  |