[Bug] Null reference exception when Web API initialized with delegates but without configuration and called from an event handler

[jmprieur]

Which version of Microsoft Identity Web are you using?
1.22.2

Where is the issue?

• Web API
  • Protected web APIs call downstream web APIs

Is this a new or an existing app?
New scenario, not met until now (my apps)
Web API initialized with delegates but without configuration and called from an event handler.

Repro

Startup.cs

services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
          .AddMicrosoftIdentityWebApi(options => { Configuration.Bind.("AzureAD", options);}, options => {Configuration.Bind.("AzureAD", options);})
            .EnableTokenAcquisitionToCallDownstreamApi(options => {Configuration.Bind.("AzureAD", options);})
               .AddDownstreamWebApi()
            .AddInMemoryTokenCaches();

and then ITokenAcquisition called from an event handler.

Expected behavior
Should work

Actual behavior
A null reference exception because the configuration is not found

[jmprieur]

Will release in 1.22.3

[jennyf19]

fixed in 1.22.3 release