Dropdown flickering and unusable on some machines

Unity Engine
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1

Hello, I’ve encountered an issue with the Dropdown UI object that I’ve been unable to find a solution for. When it opens it will flicker quickly and temporarily before closing. This only occurs on one machine of the five I have had it tried on.
I am using Unity 2018.3.121f1.

The error occurs only on this one machine, running Windows 10 Pro 10.0.17134 and it occurs 100% of the time, it occurs when using a build and when running it from a Unity editor but it triggers no warnings or errors in the console. It occurs even with a fresh project with nothing but a default Dropdown object and occurs regardless of graphical settings.

I am personally using a machine running Windows 10 Home 10.0.17134 and have no issues with the Dropdowns and the three other machines I have tested on have all worked normally, another windows machine and two macs, I don’t have more details on those.

Any help or advice anyone has would be greatly appreciated

This video shows exactly what I mean as to flickering as I could only replicate it on a single machine.

2

Long dead thread, but experiencing the exact same issue. Made a build on one machine that was working fine there, tested it out on second machine to verify working, and got this exact same behaviour. Booted up a fresh unity project on second machine, added a canvas and dropdown, same behaviour… Found a fix? Tried to restart machine but did nothing.

3

Tested on 2020.2.7f1, 2020.3.5f1 & 2021,1,4f1 (the original build from the other machine)
Based on this bug persisting across versions but not across machines I would assume it’s got something to do with my runtime but no clue how to proceed.