Chain command blocks are broken

While working with command blocks I discovered that chain command blocks were being labbeled as impulse commands blocks in the previous output zone. There were no errors in the command that I typed and it wouldn't work as a chain but when I changed it to a repeat command block it did work (but not the way it was intended to because it needed to be a chain). I tested it on 2 different worlds and tested it with and without experimental gameplay.