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Winter19 release, fail to subscribe streaming message due to 400 error

Seems the upgrading of Winter '19 release cause some streaming API issue. 

Our instance NA50 now is Winter 19 patch 7.8, by this the streaming client can't subscribe to server successfully, error:
Response Body: [{"clientId":"ebi1sw47vvaask0x1sr1grdftmakm","channel":"/meta/subscribe","subscription":"/topic/Account-20181009201859","error":"400::The replayId for channel {/topic/Account-20181009201859} wasn't found using the provided replay ID map {For input string: \"{-2}\"}. Ensure that the channel name you provided in the replay map is valid and matches the channel name used for subscribing.","successful":false}]

We didn't make any change at client side recently.

BTW, another our SF instance AP1(which still is Summer 18 Patch 20.22) works GOOD.

Anything wrong at SF side?

BTW, we are using bayuex client