Scikit-image .io.imread changes?

What changes were made after scikit-image 0.14.2 that the newest version fails to read the format while 0.14.2 automatically detects it?

Code example:
image = skimage.io.imread(BytesIO(imgdata))

Newest version throws ValueError: Could not find a format to read the specified file in single-image mode

I think we moved from matplotlib to imageio. You can verify by doing:

skimage.io.imread(BytesIO(imgdata), plugin='matplotlib')