Highlight is sticky on scrollable container

[Omrigotlieb]

Steps to reproduce:

1. Go to your mention component or to https://react-mentions.vercel.app/ to Suggestion portal example
2. Click Shift + Enter few times
3. the highlight of the mentions is sticky
4. Try adding multiple users

Expected behavior:
Highlight will disappear while scrolling
Observed behaviour:
Highlight is stuck on screen
Workaround:
none

[PaoloSikuro]

To anyone reaching this discussion after finding this "bug", the issue comes from the styiling.
Take this example as reference https://github.com/signavio/react-mentions/blob/master/demo/src/examples/Scrollable.js
you need to add the input and highlighter style to the mentionsInput component
input: {
overflow: 'auto',
height: 70,
},
highlighter: {
boxSizing: 'border-box',
overflow: 'hidden',
height: 70,
},
in this particular case it is the highlighter style that removes the sticky bad beaviour.