GTK4 4.12.3 on Windows leaking memory
I'm running a GTK4-based Rust application (MSVC) on Windows and it seems to be leaking memory right and left on Windows 10 that I do not see on Ubuntu 22.04 with GTK4 version they ship (apparently based on 4.6.9).
Renderer is Cairo (I'm running in a KVM virtual machine with guest tools and such installed).
Simplest example is "About" dialog. Just hovering mouse over tabs ("About", "Credits", "License", etc.) is leaking a bit of memory, switching tabs adds ~0.8-0.9 MiB to the process usage according to task manager on each tab switching.
Users are coming to me with an app running out of virtual memory:
Windows successfully diagnosed a low virtual memory condition. The following programs consumed the most virtual memory: space-acres.exe (9468) consumed 91717292032 bytes
I'm using mimalloc allocator via https://crates.io/crates/mimalloc if it makes a difference.
UPD: Tried system allocator and behavior is the same.