Renaming of channel breaks links/references

Rocket.Chat Version: 0.55.1
Running Instances: 1
DB Replicaset OpLog: Disabled
Node Version: v4.2.6

When channels are renamed the links/references that point to the channel stop working. Moreover, the link labels keep the previous channel name.

E.g., suppose there is a channel #testchannel. In another channel a user wrote "Hey, see discussion in #testchannel". Now, we rename the channel to #a-testchannel. The message text remains as it used to be before the renaming action. Clicking on the #testchannel link in the message now yields an error message:

My expectations:

1. The link in the message is still working (in Mongo DB the message even contains the technical key to the channel!)
2. The message texts are always changed accordingly (=> "Hey, see discussion in #a-testchannel"). Perhaps, the changing user may choose whether the labels of channel references are supposed to be updated or not.

To me, this feels like a bug as it makes renaming a no-go.
This feature is important to us. We have a vast number of channels and seek for a way to flag certain channels. Way to go seems to be suffixes in the channel names. (I'll file a separate feature request for this.)