We own a CUB Spacematic CT, 2005 build, owned by us since new, the canvas is 100% Australian, so says the label that's attached to same.
It has an Annex with three walls added. Spreader bars from ct to annex poles keep things apart, and velcro tape around said spreader bars to ensure canvas stays where it's meant to stay.
All sounds good hey ?
Well to cut long story short, despite all the above, rain water still manages to pool on the annex roof.
Then the weight of same, drags everything totaly out of kilter causing further problems.
Fortunately, we woke up to the problem during the day, and were able to regularly empty the pools, Gawd knows what would happen with a heavy downpour during the night.
Point is though, it doesn't matter where you canvas is made, or by whom in such cases, it's all about design and manufacture.