Using https://downloads.lede-project.org/releases/17.01.1/targets/x86/64/lede-17.01.1-x86-64-combined-squashfs.img I did the following:
- On http://192.168.1.1/cgi-bin/luci/admin/network/network (In luci) add a new interface. Name it something strange like "bug", and then fill in static information.
- On http://192.168.1.1/cgi-bin/luci/admin/network/network Delete interface, and the interface does not disappear.
- Interface appears to stop receiving packets but the interface is still there, and it's still in /etc/config/network.
I apologize if this is already known. I didn't find it.
Edit: By the way, https://downloads.openwrt.org/snapshots/trunk/x86/64/openwrt-x86-64-combined-squashfs.img behaves as expected.
When I do the same steps in firefox it works. I was using chrome to duplicate the bug.