@baris I'm really trying to stick to actual releases (looking at github it doesn't look like 1.17.1 has been officially blessed yet). However, staying on v1.17.0 and bumping the socket.io and socket.io-client versions seems to have done the trick!
I am running the latest nodebb master, and updated to the latest redactor-composer.
I tried to upload a file using redactor, but it did not work, and no error message was posted. With further digging I found that the file was too big (higher than the predefined value in the admin page).
Is there a way to catch and display errors from nodebb callback routed into the Redactor plugin?
Minor issue, I see that when @media width>1000 Redactor is full page, but the topic title placeholder disappears. Further research identified that the div above it has "display = flex". Unsettling that brings back the title placeholder.