I think that this still applies - i.e. Rust memory safety covers 70% of memory issues and no surprise when something in the other 30% is found:
The article that OP links to also states:
... highlights the challenges of integrating memory-safe languages...
I see no evidence that the issue is integration-related. Article jumping to conclusion? Lacking such evidence, it could still very well be related to memory bounds access issues which again don't relate to alloc/free (Rust's specialty) but rather those code sections (isolated, if proper code strategy) where memory must be accessed. Graphics buffers are memory.