cursor disappears

In Scrivening mode, “view-> Text Editing->Show Title inScrivenings” and “Only Svrivening Titles for Folders” are selected at the same time。
However, if there is no Folder in the project,Move the cursor by the UP key,and the cursor will disappear.
I attached the project and the video. In the video, I just moved the cursor. After the cursor disappears, I click on the screen. Scrolling effect has occurred.