[Bug Bash] Clicking the refresh button quickly makes an error “operation canceled by user” showing in the package list of PM UI and Error List window

[ZheeYoong1125]

NuGet Product Used

Visual Studio Package Management UI

Product Version

NuGet Client 6.15.0.13

Worked before?

It is a regression since the issue repro on D17.13\36008.115 with implicit NuGet 6.13.2.1, but doesn’t repro on D16.11\35925.156 with implicit NuGet 5.11.6.4. 

Impact

It bothers me. A fix would be nice

Notes:        

1. The repro rate is 80%.      

2. Must quickly click the refresh button, and then the error will vaguely appear.

Repro Steps & Context

1. Create a ASP.NET Web Application (.NET Framework) project in VS.

2. Select ‘Single Page Application’ as a project template.

3. Right-click the project in Solution Explorer and select ‘Manage NuGet Packages…’ menu item to open PM UI. 

4. Go to ‘Installed’ tab and click the refresh button quickly.

Expected:    

The error message should not be appeared.  

Actual:    

The error “operation canceled by user” shows in the package list of PM UI and Error List window as the video below.

Verbose Logs

[Nigusu-Allehu]

Does not reproduce on 17.13.6

17.14 p1 error in the error list
17.14 p3 error in the error list
17.14 p4 error in the error list

Note: I was able to repro the issue. However, for me the error never showed up in the package list pane. Instead, it showed in the error list window.
Rebuilding removes the error in the error list window.

[ZheeYoong1125]

I was repro this issue on 17.13.7.

[nkolev92]

NuGet Team Triage:

There's been no changes between 17.13.6 and 17.13.7 so it's unlikely that we've done something to regress this more recently.
That being said, the scenario is unlikely and of lower priority.

We should probably not allow consecutive refreshes, but it's low priority.