Overflow-x causing issues in Safari and Chrome

This bit of CSS seems to be causing a sticky scroll bar.

.page-container{overflow-x:hidden;} /* Prevents unwanted scroll space when scroll FX used. */

When I am at the top or bottom of the page and try to scroll the other direction, it acts like it is is at the end of its scroll, but then when I scroll again, it starts scrolling. Anyone else experienced this and know how to keep it from happening?

If I comment it out in the inspector, scrolling does not stick.