The forward-slash paths fix changed the checkpoint/unet combo lists on
Windows from "dir\model.safetensors" to "dir/model.safetensors", so
workflows saved before it loaded with a value no option matches: the
front-end extension reset the widget to the first model, or ComfyUI
flagged it "value not in list" when the widget was wired.
Two layers:
* random_loader_control.js migrates the widget value to its
separator-normalized form when that form is a known model, before the
reset-to-first fallback and before the wired early return.
* The loader nodes declare VALIDATE_INPUTS for the model name input,
lifting ComfyUI's strict list check for it; the shared helper resolves
separator-normalized names against the cache, so API-submitted or
programmatic values validate too. get_checkpoint_info_absolute now
normalizes backslashes explicitly instead of via os.sep, which was a
no-op on Linux.
Will Miao
be0133a699