Impossible to save image opened from SAF (Storage Access Framework)

[AlainKnaff]

Checklist

• I can reproduce the bug with the latest version given here.
• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• This issue contains only one bug.
• I have read and understood the contribution guidelines.

Affected app version

1.13.1

Affected Android/Custom ROM version

Android 16

Affected device model

Pixel 7a

How did you install the app?

Built from source

Steps to reproduce the bug

1. Using Filemanager (documentsui) open a jpg image
2. Chose Fossify Gallery to open it => image opens
3. Click "pencil" icon => crop grid shows over picture (first time you may need to confirm that you do indeed want to continue using Fossify Gallery for editing)
4. make crop icon smaller than picture
5. click top right menu (three dots)
6. Chose "Overwrite original"

Expected behavior

it should save the file

Actual behavior

A FileNotFound Exception is thrown with a mangled document URI.

It tries to save to /content:/com.termux.documents/document/%2Fdata%2Fdata%2Fcom.termux%2Ffiles%2Fhome%2F00-test%2FPXL_20260212_073020027.jpg
instead of content://com.termux.documents/document/%2Fdata%2Fdata%2Fcom.termux%2Ffiles%2Fhome%2F00-test%2FPXL_20260212_073020027.jpg

(i.e. one of the slashes after content: move to the front of the string)

Screenshots/Screen recordings

No response

Additional information

• Problem is not related to particular photo, but rather to its document uri (file name)
• Software has no logs at place where this happens
• Device is indeed rooted (but that's unrelated to this issue)
• Never (knowingly) had animations
• No rabbits, cats or other pets

Got it working (sorta...) by replacing the getFileOutputStream(fileDirItem, true) { block in EditActivity.saveBitmapToPath() with the following code:

val path2 = path.replace("^/content:/".toRegex(), "content://")
val outStream = contentResolver.openOutputStream(path2.toUri())
saveBitmapToFile(file, bitmap, it, showSavingToast)

[AlainKnaff]

The "sorta" in my initial comment:
Even though saving works with my workaround, it doesn't refresh the gallery's cache: re-visiting image in Fossify Gallery shows the old image before editing. Opening it in any other Gallery does show the modifications. Clearing Fossify Gallery's cache manually also fixes the issue.
This cache refresh problem doesn't occur with images opened from within Fossify Gallery (which supposedly uses a classical file path rather than a document URI), so I consider it the same bug.