When I press Ctrl+E (\begin{<environment>}) in the middle of a document and then press Ctrl+Z (undo), a block of text is selected below the cursor. I would expect no selected text after these two steps.

Environment

• TeXstudio: 4.2.0
• Qt: 6.2.1
• OS: Windows 10
• TeX distribution: miktex

Expected behavior

No text should be selected after Ctrl+E, then Ctrl+Z.

Actual behavior

After Ctrl+E and Ctrl+Z, two full lines plus part of the third line below the cursor are selected.

How to reproduce

• Generate three lines of text in a new document.
• Move the cursor to the start of the document.
• Press Ctrl+E
• Press Ctrl+Z