On Win10 with designer v2.2.1 In a document I can select with simple clicking a Png, frame text, a group of curves, but NOT not frame text "masked" with a png (when the png is dropped on the text layer thumbnail without rasterizing to mask first). When the PNG is rasterized as mask first and then dropped on the text layer thumbnail, the mask effect differs and the move tool "auto select" works as expected. Also when the PNG is dropped the text layer name (not on the layer thumbnail) the "mask effect" differs again and the move tool "auto select" works fine.
I apologize for presumably using "mask", "masked" and "mask effect" wrong.
Affinity Designer 2 2023-10-31 09-48-04.mp4