My progress bar cannot show all the metrics I logged.

[Mo-Junyang]

I am logging two losses in my code, but only one is displayed in the progress bar, followed by a comma at the end. It seems that I don't have enough room for them, but actually there is ample room available. The progress bar itself also looks weird, it's too short!
So I wanna know is there any option to change the length of this progress bar and the content it show?