Setup issues with m232-m237 on Fedora 39, hplip 3.23.12

I tried, first, to set it up via an Ethernet connection.

hplip saw the printer, configured it, and was able to print.

I then tried to set up scanning. The "Scan" button in the HP Device Manager ended up downloading a driver, eventually running xsane. Xsane sees the scanner, but attempting a preview hangs, and eventually brings up an I/O error dialog. scanimage -L sees it, but not airscan:

# scanimage -L
device `airscan:e1:HP LaserJet MFP M234dw (CB1249)' is a eSCL HP LaserJet MFP M234dw (CB1249) ip=192.168.0.19
device `hpaio:/net/HP_LaserJet_MFP_M232-M237?ip=192.168.0.19' is a Hewlett-Packard HP_LaserJet_MFP_M232-M237 all-in-one
device `hpaio:/net/laserjet_mfp_m232-m237?ip=192.168.0.19&queue=false' is a Hewlett-Packard laserjet_mfp_m232-m237 all-in-one
[root@monster ~]# airscan-discover
[devices]
  HP LaserJet MFP M234dw (CB1249) = http://192.168.0.19:8080/eSCL/, eSCL
  HP LaserJet MFP M234dw (CB1249) = https://192.168.0.19:443/eSCL/, eSCL
  HP LaserJet MFP M234dw (CB1249) = http://192.168.0.19:53048/, WSD
  HP LaserJet MFP M234dw (CB1249) = http://[fe80::d2ad:8ff:fecb:1249%254]:53048/, WSD

I thought that scanning over an Ethernet wasn't supported, perhaps. Next, I unplugged Ethernet and plugged in this printer via USB. The results:

Cups sees the printer. In print setting I can print a test page. Initially, hplip shows the printer is down with status 5002. If I manually stop it and start it, hplip now shows the printer as available, for some period of time. Eventually hplip once again shows "Device is busy, powered down, or unplugged" and throws a temper tantrum.

Even while the printer's status is ok, the "Scan" button results in xsane failing to start completely, with an"Error during device I/O". O don't know if it's important or not, but I got this error once when I set it up the first time as a network connection, followed by hplip prompting me to download a binary blob driver. It went through those motions and apparently succeeded, but scanning did not work. Now, after I removed the network printer and added it via USB I did not get the prompt to download a binary driver.

And the output from scanimage and airscan-discover is, now:

[root@monster ~]# scanimage -L
device `airscan:e0:HP LaserJet MFP M234dw (CB1249) (USB)' is a eSCL HP LaserJet MFP M234dw (CB1249) (USB) ip=127.0.0.1
device `hpaio:/usb/HP_LaserJet_MFP_M232-M237?serial=VNN3N12158' is a Hewlett-Packard HP_LaserJet_MFP_M232-M237 all-in-one
device `hpaio:/net/laserjet_mfp_m232-m237?ip=127.0.0.1&queue=false' is a Hewlett-Packard laserjet_mfp_m232-m237 all-in-one
[root@monster ~]# airscan-discover
[devices]
  HP LaserJet MFP M234dw (CB1249) (USB) = http://127.0.0.1:60000/eSCL/, eSCL

Not sure why it's still showing the network connection, that I unplugged.

Running xsane manually: it shows the printer available as "hpaio:/usb..." and "hpaio:/net..." (even though it's unplugged).

Selecting the USB connection in xsane results in an immediate "Error during device I/O".

How do I get scanning to work, as either a USB or a network connection?