Issue with duplicating row templates and referencing objects

I have a table with meeting agenda templates in a canvas field; and another table for hosting meeting minutes for each meeting. The way it works is I select the meeting type, and the agenda copies over from the first table into the second table.

Within the canvas are some reaction button for voting on topics. These works fine for a few weeks; but then found recently that the objects within the meeting minutes can no longer be copied/pasted. When you copy and paste an existing reaction button (e.g. to add another row with the same format) - the reaction button pastes “Object Not Found!”.

Have other folks ran into the same issue?