Default not activating properly for MultiCheckBox on Pluto v0.14.8

[ArchieCall]

For MWE below: each line is a separate cell.

using Pluto
using PlutoUI
@bind my_boxes MultiCheckBox(["A", "B"]; default = ["B"])
my_boxes

Pluto v0.14.7
Activate Pluto and let it settle down -- do not click on the multi check boxes in any way.
The @Bind line outputs check boxes "A" and "B" with box "B" checked. This is expected.
The my_boxes line outputs ["B"] which is the expected output.

Pluto v0.14.8
Same thing as Pluto v0.14.7, except the my_boxes line outputs shows nothing.
This means box "B" is checked, however the my_boxes cell has not reacted to this check.
If I uncheck box "B" and then check it again, then my_boxes shows ["B"], which is expected.

The net of this behavior is; MultiCheckBox defaults have no meaning on v0.14.8.

[fonsp]

#1284 might be related,

[fonsp]

Fixed, probably by #1898