The recording editor used to save every move, resize and retime as it happened. It now collects your changes and only sends them when you click Save, which is disabled until there is something to save and shows Saving… then Saved. Trying to leave the page with unsaved changes - including closing or reloading the tab - now prompts to save first.
Also fixed: an image added or repositioned in the editor now keeps showing correctly while the recording plays back inside the editor itself, matching what viewers see on the share page.