Click the Find First Clip button on the Search toolbar of the AceText Tower to find the first clip in the active collection containing the search term. All clips in the collection will be searched, regardless of the state of the “all clips in this collection” search option.
If the “all clips in all collections” search option is on, then AceText starts searching in the first open collection (leftmost tab) to find the first matching clip.
If you want to find the first search match in the text of the current clip, use the Find First button on the AceText Editor instead.