Save image in Google image search doesn't work (with workaround)

[Shudushi]

Prerequisites

• I performed a cursory search of the issue tracker to avoid opening a duplicate issue
  • Your issue may already be reported.
  • I also searched the existing issues at https://github.com/gorhill/uMatrix/issues
• This is not a support issue or a question
  • Support issues and questions are handled at /r/uMatrix
• I tried to reproduce the issue when...
  • uMatrix is the only extension
  • uMatrix with default lists/settings
  • using a new, unmodified browser profile
• I am running the latest version of uMatrix
• I checked the documentation to understand that the issue I report is not a normal behavior
• I used the logger to rule out that the issue is caused by my ruleset

Description

Download of images found with Google-Search doesn't work.
Similiar to #92

A specific URL where the issue occurs

https://user-images.githubusercontent.com/1280209/72898709-e5199f00-3d24-11ea-986a-430859134f6b.png

Steps to Reproduce

Search for a image in Googel, no matter which one.
Klick on any image in the search results, that the image is shown on the right side.
Klick on that image on the right side with right mouse button and choose "Show image" (sorry if it's called different, I'm on german firefox).
Image is now displayed.
Klick on that image with right mouse button and chooce "Save image under..."
Download failed.

Download only works when one allows "others" in uMatrix (See screenshots below)

Ruleset

Download not working

Download works

-->

Supporting evidence

-->

Your environment

• uMatrix version: 1.4.0
• Browser Name and version: Firfox 73.0.1
• Operating System and version: Windows 10 1909 Build 18363.657

[uBlock-user]

Download only works when one allows "others" in uBlock

Blocking "other" column specifically for first-party is expected to cause download breakage because download requests type are "other" in nature. This is not the same as the bug you mentioned because that bug had downloading working at the second attempt. Here, you're willfully blocking the other column and expecting the download to work which it wont.

[uBlock-user]

Similar to #5

Also https://github.com/gorhill/httpswitchboard/wiki/Why-can't-I-save-an-image-using-contextual-menu%3F

[Shudushi]

This is not the same as the bug you mentioned because that bug had downloading working at the second attempt.

When one klicks on "retry" in Firefox download history (with "other" blocked) it downloads succesfully.
I can reproduce my workaround also on that problem and it works there too.

[uBlock-user]

Can you try to reproduce on the dev build ?

[Shudushi]

Yes, I will try.

[uBlock-user]

When one klicks on "retry" in Firefox download history (with "other" blocked) it downloads succesfully.

Retry requests are not sent to uMatrix, hence they bypass the extension, that's why it will always work from the Firefox's UI. Any network requests made by Firefox's UI will never be sent to extensions to intercept.

[Shudushi]

Behavior is different, but doesn't work too.
Doesn't work

Doesn't work

Doesn't work

This is working

This is working

[uBlock-user]

@Shudushi should work, I can't reproduce this issue on Firefox Nightly, so seems something changed in Firefox with the v75. In uMatrix's logger the download request is of category image and seen as tabless according to uMatrix, not other. The last two images shows CNAMEs getting blocked, so ofcourse you will have to unblock them too.

[Shudushi]

My fault, sorry. Had to allow github. Yes, confirmed. Its working now under v1.4.1b6.
Thanks a lot for your support.

[uBlock-user]

No actually I can reproduce download getting blocked when blocking other column in Firefox 73, but not on Firefox 75, so Firefox has changed the behaviour in the upcoming version.

[Shudushi]

Developer's business as usual ;-)

[Shudushi]

Btw. "https://pastebin.com/raw/HjWANtHk" from issue https://github.com/uBlockOrigin/uMatrix-issues/issues/92 is working too on Firefox v73.0.1