When you notice an image, textbox, button, etc not being associated with a group, it can create a weird experience. Editing becomes trickier, and the animations aren't applied to the ungrouped element.
To solve this, simply click the element (ie. button) > go to the Display tab in the sidebar editor > look for the dropdown that says "Add to group" > choose the tooltip you want to add the tool to, and you're done!
HELP: Not sure what the name of the tooltip or element is called that you want to group with? This article should help.