fonts – How to disable the import option in LibreOffice Calc when pasting text into a cell?

I create a table in which I have to copy a few lines of pdf in a table. I use LibreOffice calc for making tables. The problem is that even if I copy a simple text from the PDF file, when I paste it into LibreOffice, the import option continues to display (randomly; sometimes it sometimes, and because of the font size of this pasted text, it is also very small.The desired result is that when I paste the text into the cell, it just got stuck in the cell, without loss of time, which also disrupts the size of the font.
The same question is asked here but no solution.