Windows 10: KB4541335 caused a desktop display problem?

I just had a baffling experience, thus the title stated as a question

On 3/24/20 I installed KB4541335, the 2020-Cumulative Update and

it installed and worked fine...

Then, the last day or two, whenever I opened an application the desktop world disappear

Desktop was still there, Rt-click on Taskbar & Show Desktop brought it back

I first noticed it after exiting web browser that had been full screen (Opera)

So, put on my troubleshooting cap

First I uninstalled the last update (KB4541335) and everything now worked. Tested it and desktop stayed showing even with complex server logon boxes

So, liking pain, I re-installed KB4541335 and this time the desktop worked normally

So, faulty update or maybe something broke after a few days ?

I updated 4 days ago and it started messing up yesterday

Really hate intermittent problems, if that's what this is

BTW, my PC is configured lean & mean for gaming using Only native Windows control panels

:)

 

KB4541335 causes gibberish system output

I'm running Windows 10 Version 1909 (OS build 18363.752)

Installation of KB4541335 causes system output to be gibberish.

For example, "recycle bin" becomes "oonmm0000".

I wanted to remove KB4541335 but the listing of installed updates was unreadable.

In my system it appears that the default language pack (English (US)) was trashed.

I was able to resolve the issue by making English(Canadian) the default language pack.

I am undecided about removing KB4541335 because there are some fixes that are useful to me

Any advice would be appreciated.

 

updated KB4541335

After this update KB4541335 my desktop has changed language I don't understand?

 

Driver and/or display problem (AMD)

Try this:

• Right click on a blank area of your desktop and select "Display Properties"

• Select "Advanced Display Settings"

• Select "Display Adapter Properties"

• Click on "List all Modes"

• Select the preferred display mode. Something with at least 60Hz.

• Then select your setting you want

• See if the option came back