Objects randomly don't cast a shadow

[Safarcikm]

I got the issue that on several occasions random objects don't cast its own shadow, I've tried every debug trick I could think of. Here is a super simple scene in which I've managed to isolate the problem that replicates the issue. Note that two of the boxes works normally and two won't. Please help!
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Link for the file:
https://we.tl/t-p66tL2Y3N5

[fixeighted]

It's simply the sun's shadow bias...the cause of many similar issues. Set it to 0.0.

[kosso_olli]

It's simply the sun's shadow bias...the cause of many similar issues. Set it to 0.0.

I hate that value.

[fixeighted]

Hehe yeah it seems it's regularly screwing with people. Oddly it's one of the first things I think to check but in this scene it was really odd and had me stumped for a good few minutes, as it wasn't the usual look and acted like a real cut-off

[Safarcikm]

Well, that fixed the issue! Thank you so much, I thought I had corrupted the whole file somehow, as I've imported some newly bought assets. Now when I look back at it, it was so obvious, all the shadows were quite off in this scene!

Thank you again!

Animation of the original scene with the old bias:
https://we.tl/t-zwkCjkWsw1

I'm wondering why the default value is 0.2 bananas tho!

[fixeighted]

It's a legacy default parameter, from when it could make a real difference in some scenes apparently. It should disappear at some point, we're told. Meanwhile it continues to cause headaches
for the unsuspecting

[kosso_olli]

It should disappear at some point, we're told. Meanwhile it continues to cause headaches
for the unsuspecting

I cant wait!

[Buck]

It's a legacy default parameter, from when it could make a real difference in some scenes apparently. It should disappear at some point, we're told. Meanwhile it continues to cause headaches
for the unsuspecting

I've never had a problem with this when working at a correct scale. when I'm doing close ups and correctly scaled tiny items/products I'll adjust it lower. But the same as you, it's one of the first things I check if someone is having problems with shadows.