DownThemAll removes filename from downloads started by another extension

[ghost]

Desktop (please complete the following information):

• OS: Linux Ubuntu, Kubuntu
• Browser and version: Chrome 83.0.4103.61 (Official Build) (64-bit)
• DownThemAll! version: 4.2.6

Describe the bug
imgding (another Browser-Extension) starts a download with a filename:

let download = {
            url: http://example.com/1234.jpg,
            filename: 'foo/bar.jpg'
        };
        browser.downloads.download(download)....

The filename gets lost, if DownThemAll is installed. With DownThemAll installed the filename is taken from the URL ('1234.jpg') and the file goes into the default download folder.
Without DownThemAll installed, the file is downloaded to 'foo/bar.jpg' in the default download folder, with 'foo' being a sub-folder

I suspect that DownThemAll intercepts the download and ignores or removes the supplied the file name.

[ghost]

I created a small extension that adds a context menu and downloads a file. Just unzip it and and "Load Unpacked" into Chrome or Chromium. It seems that Firefox is not affected.

If DownThemAll is installed, the file is downloaded as 'Readme.md' into the default download folder.
If DownThemAll is not installed, the file is downloaded to 'foo/My-Readme.md' as specified in the download request.

const init = () => {
    chrome.contextMenus.create({
        id: 'download-test',
        title: 'download-test',
        contexts: ['page']
    });
    chrome.contextMenus.onClicked.addListener((info, tab) => {
        if (info.menuItemId === 'download-test') {
            chrome.downloads.download({
                url: 'https://raw.githubusercontent.com/downthemall/downthemall/master/Readme.md',
                filename: 'foo/My-Readme.md'
            })

        }
    })
}

downloadtest.zip

[Bamajon1974]

I downloaded the download test extension, with Downthemall installed, loaded the extension unpacked, right clicked on a web page and the extension downloaded readme.me into the download folder.

What do I do now?

[ghost]

I downloaded the download test extension, with Downthemall installed, loaded the extension unpacked, right clicked on a web page and the extension downloaded readme.me into the download folder.

What do I do now?

Sorry, I think there is a misunderstanding. This test extension does not solve the problem. It is intended to easily reproduce the problem.
I linked this issues because I think they have the same root cause.

[Bamajon1974]

Got it. Please alert users when the issue is fixed.

Thanks!

[Rob--W]

This is an issue with Chrome:

• https://bugs.chromium.org/p/chromium/issues/detail?id=1106297 . Note: The bug report was marked as Fixed, but it was not fixed. Their "fix" was to update the developer documentation to describe the buggy behavior as the intended behavior.
• https://bugs.chromium.org/p/chromium/issues/detail?id=1050821 (related issue, also WontFix)

[adamwinn]

I'm seeing this with the Online Download Manager extension too

This extension failed to name the download "" because another extension (DownThemAll!) determined a different filename