Images are cached incorrectly, probably by glide

[lognaturel]

ODK Collect version

66e9c1f but I believe this affects all recent versions

Android version

5.1

Device used

Moto G5

Problem description

When media is updated for a Central draft, that update is not reflected on Collect.

Steps to reproduce the problem

1. Start a Central draft for a form with attached media such as All Widgets.
2. scan in the draft QR code to Collect
3. change one of the media files in Central
4. Refresh the form in Collect

Expected behavior

The new media file should show in Collect.

Other information

Things I've verified:

• Central changes the md5 hash
• Central changes the etag
• Collect does download the new file and updates the "updated at" timestamp for the form
• The media file is correctly written to storage! I verified this through adb and the files app. Yes, this means that the file that is being used by Collect does not seem to exist in storage.
• The problem persists even after killing and reopening Collect
• If I delete the image from storage, Collect shows a missing image error. Then if I download the form update, the expected (new) image is saved to disk but the unexpected (old) image is still shown when filling a form!
• If I delete the blank form from the UI and download it again, the unexpected (old) image is still shown
• If I delete the project and create a new one from the same QR code, I get the expected (new) image
• If I scan in the QR code again and create a duplicate project, the duplicate project shows the expected (new) image. The original project still shows the old image

https://forum.getodk.org/t/select-one-multiple-with-images-for-choices-big-image-choice-filtering-labels-images-not-shown-enketo-images-repeated-collect/40655/6?u=ln

I suspect this is related to glide disk caching: bumptech/glide#624 (comment), https://github.com/bumptech/glide/wiki/Caching-and-Cache-Invalidation