Retain horizontal scroll position in overflowed tag entry input after selecting tag

[karlhorky]

During creation of a bookmark on the mobile website, the tag entry input will overflow off the right or left side after 50-55 characters.

This on its own is not a problem because:

1. You can scroll to the left and the right
2. Your cursor stays visible on the right side while typing

However, one behavior is a problem with this overflow:

3. After selecting a tag from the autocomplete dropdown, the scroll position snaps back to the start, even though your cursor is still over on the right side (now your cursor is in the overflowed part and hidden from view until you scroll)

You can get around it by scrolling over to the right again.

However, this happens every time you select a tag from the autocomplete, which leads to needing to make a lot of annoying microinteractions.