Also occurs few other places in those mini notices with the OOUI icon:

MediaWiki WikiEditor (2010 editor):

VisualEditor's page notice on Wikipedia:

In T401029#11055256, @Waddie96 wrote:

Also occurs few other places in those mini notices with the OOUI icon:

MediaWiki WikiEditor (2010 editor):

VisualEditor's page notice on Wikipedia:

I believe that these two are T398529: Message: icons can get cut off depending on message text length. Unsure about the issue in the task description, though.

T398529: Message: icons can get cut off depending on message text length is fixed but it's still persistent on https://www.wikimedia.org/ unless that website 'hasn't upgraded'.
Proposed solution: (Add to .donate-emoji CSS selector to https://www.wikimedia.org/ lines 1541 to 1545 of (index) if that helps)

.donate-emoji {
    min-height: calc(var(--min-size-icon-medium) + 2px);
    min-width: calc(var(--min-size-icon-medium) + 2px);
}