I’m not entirely sure. I’ve encountered similar problems a handful of times, but it was generally about a blade or two not updating all the time–never that all of them refused to update at all.
My understanding is that when your site is loaded and a view is requested, the Blade engine will determine at runtime if a file is different or not, and then update it. If that’s not happening my guess would be that something is interfering with that process, potentially something related to your filesystem. You haven’t provided any details as to your dev environment, but I’ve had some issues in the past with VMs and the boundary between the guest and host filesystems–specifically some virtualization systems have their own syncing mechanisms that can get confused/caught up/etc and not sync files between guest/host as they should, putting your in a situation where on the host your files seem to have changed, but those changes have been synced to the guest. Potentially there could be a permissions issue at play too (I’m not sure how, but permissions issues always crop up where you least expect them).
I would probably start troubleshooting by examining the files directly and seeing when and how they’re updated; if all of them fail to update or only some of them; if changes made directed to the rendered blades are reflected on the front-end or ignored; if changes made outside of your editor/IDE are respected or ignored; if changes made inside/outside of your guest are respected or ignored; etc.