Mini design announcement
To be more in line with core Discourse-style, all border-radius from chat are being removed.
They have been replaced by the existing --d-border-radius
variable (used for most things), and supplemented occasionally with the new --d-border-radius-large
variable (used mainly for chat input and the thread indicator message).
Simply setting these 2 variables to 4px
and 8px
respectively, will return chat to its former roundness.
Disclaimer
These variables are not limited to chat.
For the scenario to only have rounded borders in the chat-feature, and nowhere else, custom CSS would be needed.