Shotcut version 20.11.28, 64 Bit (?)
Bug 1) Using the filter ‘Size, position and rotate’ , the zoom-slider initially stays at 133,3% position, but seems to give un-chenged (100%) zoom. Setting it to 100% by the reset-icon (next to the slider) makes zoom-out (image smaller with frame). Slider seem to show wrong values, Footage is 1920 x 1080, or 1440 x 1018 in 16:9. Preview size: any setting).
Bug 2) Changing the preset dropdown to “default” makes 133,3, same as initial setting, but - as a contradition -. different from reset-button-value.
Bug 3) The preset dropdown acts only if you change its selection. Example: If your previous entry was “default”, then you reset the Zoom slider to 100%, then again open the preset-dropdown and select “default” again, nothing happens. You must first select any other option, then only you can reach “default” again AND have the effect! (which is 133,3%-zoom in this exampe).