List collector behaving badly for one use ( me )

[HugoFirst]

I have an issue with list collectors.  The main issue is that I can only add one value to the right pane at a time, even though I selected multiple values in the left pane.  Other people can view the same form and list collector and it works fine.

3 other clues:  ( see image  )
1. When I select one or more values in the left pane,  information about one of the values displays in a narrown black box with white text.  This often scrolls my display.  Other people do not see this.

2. When I select one or more values in the left pane, information about a value displays under the left pane and takes up 1-15 rows of text.  Other people see a couple of lines at most.

3. Both panes in the list collector have a question mark in a circle just outside the pane in the upper left corner.  Other people do not see them.

[Brad Bowman]

Looks like a browser issue.  Are you using the same browser as other users?  What happens if you impersonate a user then try the same?  Do you have any browser extensions or plugins that others don't have?

[Brian Lancaster]

In addition to what @Brad Bowman  has asked. Have you tried using incognito mode to see if you still have the issue? Have you tried clearing you browser cache?

[HugoFirst · Accepted solution]

Your comments got me on the right path, but not completely there.
We have 3 instances and I've been working with this in our dev and test instances.
FWIW: I'm using both Chrome and Edge.

Clearing my browser cache was part of the key.  And I don't mean holding the control-key down when you click refresh, and I don't mean loading the cache.do page.  Neither of these did the trick.

I went to the browser's setting and cleared my browsing data for all time.   

The second key action is that I went to the sys_user_preference table and deleted ALL my preferences.  There were over 1,700 of them.  Yes, I used a fix script.  I'd still be deleting them in the UI.

A combination of both of these actions restored the normal functionality of the list collector for me.  In both browsers.  I may decide to find which preference (or preferences) were responsible.  But that would take a lot of trial and error.  So it won't be right away.  But if I do, I'll post it here.

Note: after some trial and error, I determined that the sys_user_preference named glide.ui.accessibility was the cause of the issue.  When I deleted that one for my userid, the problem went away.  If I restore it, the problem comes back.   Go figger..... 

[Tim Witkovsky]

I can't thank you enough for finding this! I was having a different issue with the list collector where it would move multiple items at a time even if I was only clicking one, almost like I was CTRL+Clicking them. It was so hard to work around! Huge thanks, Hugo!