The new "standard" font size of 16px, which appears to be default of for logged out users, causes various issues in VE, for example in the toolbar:
* There are gaps between the Publish buttons and the edge (also the Paragraph dropdown more subtly):
** {F57426012,size=full}
* Icons are fuzzy due to being scaled up from a 20px canvas to 22.8px.
** e.g.: {F57426056,size=full} V {F57426046,size=full}
** Note: this issue will affect **all** OOUI users
There may be other issues across VE and other OOUI apps, but that will require deeper regression testing, for example this button misalignment in the link inspector:
{F57426071,size=full}
or this layout when editing an external link:
{F57426097}
As the text size setting (currently) only changes the size of the content are, and not any of the other UI components, this same principle should apply to VE, so the toolbar, inspectors and dialogs shouldn't be changing size at all.