Mouse trouble whereas writing

Hi !

Each time I am writing, the cursor send the letter to a another part of the page or it selects few words what are deleted if I don’t look at the text at the precise time… that annoyes a lot.

In advance, thank you for your help.

Best regards,

Does your cursor also cause annoying things to happen when you are using other programs, like using the Internet?

Mouse or touchpad? Only in LibreOffice?