Cannot paste when copying a line using Ctrl+X

[sky-279]

Here are some test data：

Without selecting text, use Ctrl+X to copy an entire line, and then use paste. There is a probability that the following problems will occur:

As shown in the screenshot, the line where the cursor is located has been replaced with a blank line. A blank data appears in the clipboard.

The expected situation should be that after the cut line disappears, the subsequent paragraphs fill in the blank space. The copied content appears in the clipboard.

This issue greatly affects usage and can lead to data loss when users are not careful.Hope it can be fixed as soon as possible.