Hi,
I have 2 product attributes: attr1 and attr1. attr2 has +10 euro more price as well. I have set control stock by product attributes.
First bug: on product attributes, if 'back in stock' is set, but stock = 0, and 'allow back in stock warning'...then no button to subscribe to is shown if that attribute attr1 is selected.
Second bug:
The other attr2 is selected, and stock = 0, but not 'back in stock' is set. Then customers are able to checkout..which should not since stock = 0 for that attr2.
What I do now as a work around, if there is no stock at all, set on product level, the stock control to 'stock of product' and set stock to 0 and allow backinstocksubscriptions. Now a stock warning is possible, not specific for the attribute, but is start. Not sure is email will be sent to subscriptions. If not, this is third bug.
However, help / assistance required to avoid second bug, since customers checkout something we cannot deliver.
J.