Why does my 0.5g product weight display as 1g?

[YounesTimitar]

Hey

So I have one product with only 0.5  g (weight) but all the time it shows for 1g. Every other product the weight is over 1g and it shows correct but only for this one its 0.5g  but shows 1 g

[Burakyuksektepe]

I am trying to add weight information to product page. But the weight is constantly rolling. The number should not be rounded. Could you help?

<p>Total Weight: {{ product.variants.first.weight | weight_with_unit }}</p>