What Boardpane can't do yet

Boardpane is version 0.1.1. This is the honest list — everything below was checked against the code and against a real Azure DevOps organisation, not guessed at. If something here is the one thing you need, say so at support@boardpane.com; that's how the next version gets decided.

What it shows

One organisation and one project at a time. Switching takes two clicks and costs nothing, but there is no combined view across projects.
Up to 100 work items matching your query, and up to 100 active pull requests. If you have more than that, you see the first 100.
Nothing refreshes on its own. There is a Refresh button at the top of each view; Boardpane does not poll Azure DevOps in the background.
The Pull Requests view shows every active PR in the project, with your own vote marked on each — not only the ones assigned to you for review.

Work items

You can change the state, add a comment, copy a branch name, and (with Pro) create one.
You cannot edit a work item's title, description, assignee or any other field after it exists — use the Azure DevOps website for that.
No attachments, and no linking work items to each other.
The query behind "My Work Items" is a single WIQL query in settings. There is no list of saved queries, and your saved queries from the Azure DevOps website do not appear.

Reviewing a pull request (Pro)

Up to 500 changed files in one pull request.
Binary files do not render. Images, PDFs and anything else that isn't text come back as unreadable characters in the diff. (Checked against a real PNG in a real PR.) Open those in the browser.
Comments are posted to the pull request as a whole, not attached to a line of code.
Complete always squash-merges and deletes the source branch. If you need a merge commit, a rebase, or the branch kept, complete it in the browser instead.
You can approve, reject, comment and complete. You cannot create a pull request, mark one as a draft, add reviewers, or resolve an existing comment thread.

Not in Boardpane at all

Boards and the card wall, sprints and backlogs, pipelines and builds, wikis, test plans, browsing repository files, and dashboards. Boardpane is a sidebar for the two things you touch all day — it does not replace the Azure DevOps website.

Signing in

In a folder you have not trusted, VS Code runs in Restricted Mode and the Boardpane icon does not appear at all. Trust the folder and it comes back — it isn't a failed install.
If your organisation blocks the one-click Microsoft sign-in, use Boardpane: Sign in with a Personal Access Token. The token needs Work Items (read & write) and Code (read & write).
Only Azure DevOps Services (dev.azure.com). On-premises Azure DevOps Server / TFS is not supported.

Pro and being offline

Boardpane re-checks your licence key with Polar about once a day. If it can't reach Polar — you're offline, or Polar is down — Pro keeps working for 14 days. Past that, Pro features wait until the next successful check. Nothing else about Boardpane needs the internet beyond your own Azure DevOps.