Channel Framework major issue - Messages not being delivered.

Hi, we have noticed that some messages that we sent via the Channel Framework Push endpoint never reach the agent workspace. 
https://developer.zendesk.com/documentation/channel_framework/understanding-the-channel-framework/push/ 

After additional tests, we have found that if a user sends more than 30 messages in a short time span (which is not uncommon in some active chats), message 31 and the following messages will not appear in the conversation log. Channel framework still sends us 200 Success as if messages were delivered normally.  We have been actively using the channel framework across multiple apps since 2018, and this issue only appeared recently.  

 Could you please look into this and remove the silent restriction on the channel framework? Thanks a lot!