Blazor component errors are not informative

[brud]

Summary

I have a very uninformative error. It doesn't tell me about file or component it's in:

Uncaught (in promise) Error: Found malformed component comment at Blazor:{"sequence":0,"type":"server","prerenderId":"dda49ec4a12548b4b3d7e4ada4850ebb","descriptor":"CfDJ8LkkoHhStMpJrzKtdnnAN6DmLH3J1PFx7\u002BPnAfrV9ik0AMp7XkuK9yAK4R43EGMZ626SxCkYWtmg6ASGOaayQR7Ll0YBpgnfIrnSO3KmcftYj32RN/U3LEH7RYpQ0UMAr9d5ih8wpjVFz2abQsM8Q9hcZjp/KaA8G71GbEOyyuy6ucRPhTCQWd3\u002Ba7EcP05NUSLSR9fIDEtyb3DUCBSjawd7VIEbrS4rlMTGAFRGtp4l3uZ4F6MpTzzfixciRvJ6CiLqaPbylaSuZpQG/DFJvgm3Q4R2fjzBV/ZrATW9Noi/cQ5Gw73oq9WtlFTQtc4hhTMPmmKaPVtyiASlrJjvbTGmLCNNT6x0yHhLiwxJxX/D"}
    at jn (blazor.server.js:1:124629)
    at Fn (blazor.server.js:1:122852)
    at Fn (blazor.server.js:1:122888)
    at Fn (blazor.server.js:1:122888)
    at blazor.server.js:1:127422
    at blazor.server.js:1:127594
    at Gn (blazor.server.js:1:127598)

[mkArtakMSFT]

Thanks for contacting us. This is not expected to happen in customer apps.
The fact that you get such an error indicates that you have some logic which manipulates the HTML DOM (not through Blazor).
Unfortunately, there is not much we can do either without a repro. So if you are convinced that this is not due to that and you can get us a minimal repro we will investigate.

Hi @brud. We have added the "Needs: Author Feedback" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[SteveSandersonMS]

It's also possible that the server which rendered this markup is not the same one that the user is connecting to when they start up the app. Do you have multiple servers, and if so do you have client-server affinity?

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.

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