Shipping method according to weight - doesn´t work

[freeme]

J2.5.1
VM2.0.1e

Hi,
trying to set up shipping methods, which are shown according to product weight. What I did:

Set up
SHIPPING METHOD 1 - minimum weight 100kg and maximum weight 120kg
SHIPPING METHOD 2 - minimum weight 0kg and maximum weight 80kg
SHIPPING METHOD 3 - minimum weight 0kg and maximum weight 80kg

PRODUCT 1 - product weight 110kg

When I put PRODUCT 1 in the basket, only the SHIPPING METHOD 1 should be shown, right? But I can still also select shipping methods 2 & 3.
Is that a bug, or misconfiguration?

[freeme]

I could localize the reason: the product, which makes problems, has a minimum order number of 4 units defined. If I delete the minimum order requirements, then it works! I didnt realize at first that VM adds the weight of all ordered units together. In my case, the limit was exceeded, thats why the shipping method was not shown...