In the quick reply:
1) Enter the text "Test Test"
View attachment 79971
2) Hit 2x enter, write another text "Test"
View attachment 79972
3) Select the last paragraph with the mouse
View attachment 79973
4) Hit the delete button to remove the text
View attachment 79976
5) Hit CTRL + Z to restore the deleted text => it doesn't work, and the cursor automatically moves 1 paragraph upwards.
View attachment 79975