Dropbox Plugin Custom Header doesn't work

Hi All,

I’m using the Uppy Dropbox plugin combined with Companion stand alone server.
I’m able to login into Dropbox account and upload files from there thanks to the compaion, but…
i’m trying hard to pass in each Companion call a custom header without success.

Here is my code:

uppy.use(Dropbox, {
target: document.getElementById(“domElementID”),
companionUrl: “url to companion”,
serverHeaders: {
test: ‘custom header’
test: ‘custom header’

I tried to use even serverHeaders key or companionHeaders key… but when i check the network request on the browser inspector or i log headers from companion (req.headers), there isn’t my defined custom header…

Is this a bug, or i’m missing something?
Please help