Multi static select dropdown wont open again after selecting an option

Description

Hello,

I am having an issue with the multi-select. Whenever I select any option from the menu (on desktop) the menus dropdown will not appear for me again to select a second option. This has caused some confusion for users as they know they need to select multiple items but can't access the dropdown again after the first selection. My workaround thus far has been to type in the option you're looking for and the dropdown will appear again and populate with search results. I have noticed if you click into another box and back into the multi-select it may or may not work, but it's definitely not as intended.

What type of issue is this? (place an x in one of the [ ])

• [ x ] bug
• enhancement (feature request)
• question
• documentation related
• example code related
• testing related
• discussion

Requirements (place an x in each of the [ ])

• [ x ] I've read and understood the Contributing guidelines and have done my best effort to follow them.
• [ x ] I've read and agree to the Code of Conduct.
• [ x ] I've searched for any related issues and avoided creating a duplicate issue.

Bug Report

Filling out the following details about bugs will help us solve your issue sooner.

Reproducible in:

package version: Slack/bolt 3.11.1

node version: 18.2.0

OS version(s): MacOS 13.0.1

Steps to reproduce:

1. Make a multi-select with several options
2. Select any option
3. Menu/dropdown will not drop down after the first selection or if it does, it is finicky and won't stay open.

Expected result:

Drop down menu should continue to appear with every click of the box.

Actual result:

The drop down does not appear and the only way to select multiple items is to type them in.

Attachments:

Video: https://drive.google.com/file/d/13689zwlxYHxxPD_jhuWv07QuE1JF2FQI/view?usp=share_link

Reproduce the issue with Slack/Bolt 3.11.1 on Node 18.2.0 using a multi-select with several options, following the three listed steps. Compare repeated clicks after the first selection with the expected behavior that the dropdown remains available; use the attached video for the reported interaction details.