If it continues to give you trouble, a boot manager call rEFInd would provide a solution. It provides the capability of booting a grub entry (keeping all the good grub stuff happening as it should), and has no need or use for os-prober. Windows would be picked up automatically, so no need for os-prober - and grub for Garuda would be rebuilt properly whenever it needs to.
If I can be forgiven for this 
- here's a wiki entry I made on another distro showing how easy this is, or I could assist if needed. (I have a 5 build multi-boot, including Garuda, on my main system.
(here is one way it has looked)
