Bootstrap modal: background jumps to top on toggle

Question

I have a problem, with a modal. I have a button on a page, that toggles the modal. When the modal shows up, the page jumps to top.

I have done everything I could to

Answer 1

For me works when I changed the version from 3.1.1 to 3.3.7

If you do not have to use version 3.3.1 try replacing.

After the change, it is good to check that the rest of the function works correctly.