[Bug]: alignment issue when selecting and deselecting items

[lovasoa]

Bug description

When selecting an item with ctrl+click, the 1px grey border around it disappears, which makes the entire list of options jump by 2px

Expected behavior

selecting an option shouldn't change the position of other options

Steps to reproduce

1. In a multiselect, select two options
2. click on the first one to make it become blue
3. expected result: the other option doesn't move
4. actual result: the other option moves by 2px because the border around the first one disappeared

Additional context

• OS: all
• Browser all
• Version latest (2.3.1)
• Device: all

found while trying to integrate TomSelect with SQLPage