• https://www.w3.org/TR/css3-multicol/#overflow-inside-multicol-elements

Content in the normal flow that extends into column gaps (e.g., long words or images) is clipped in the middle of the column gap.

• https://drafts.csswg.org/css-multicol/#overflow-inside-multicol-elements

Floated or in-flow content that extends into column gaps or neighboring columns — e.g., long words or images — is not clipped and may therefore cause overflow.

The ED change occurred in aa41389.
The email announcing the draft change cites the TR as the reasoning for the change...😕

A. Some testing suggests that only Firefox implements the ED's "don't clip" behavior. Does the group think that the other browsers are actually going to change their behavior here? It's been 3 years.
B. The ED's text addresses floated and in-flow content. What about non-float out-of-flow content, such as position:absolute? Or in the case of the CR's text, what about out-of-flow content? I ask because of https://bugzilla.mozilla.org/show_bug.cgi?id=1282363