<!--- Please read this! Before opening a new issue, make sure to search for keywords in the issues filtered by the "regression" or "bug" label: - https://gitlab.com/gitlab-org/gitlab/issues?label_name%5B%5D=regression - https://gitlab.com/gitlab-org/gitlab/issues?label_name%5B%5D=bug and verify the issue you're about to submit isn't a duplicate. ---> ### Summary Uploading a file to a project repository via UI results in the file always being uploaded to the first repository path that was loaded in the browser. This happens because we initialize the JavaScript for Dropzone.js only on `DOMContentLoaded` and do not reinitialize or update its `url` configuration when the project tree view changes in the UI. See: https://gitlab.com/gitlab-org/gitlab/blob/57961bbdeee87a11eced48794e15553216af8601/app/assets/javascripts/blob/blob_file_dropzone.js#L32 The workaround for this is to first browse to the path you want to upload files via UI to, then do a browser refresh, and only after that upload the file. [Reported](https://gitlab.zendesk.com/agent/tickets/150891) (Zendesk, internal only) by a Premium customer. ### Steps to reproduce 1. Create a new project and initialize it with a README 1. Create a directory `test_dir_a` in the repo root 1. Create a directory `test_dir_b` in the repo root 1. In your browser, navigate to `/-/tree/master/test_dir_a` 1. Refresh your browser 1. Now, navigate to `/-/tree/master/test_dir_b` SOLELY by clicking on `..` then `test_dir_b` in the repo tree browser 1. Upload a file by the UI (click on the `+` dropdown, select "Upload file") 1. See that the file is uploaded to `test_dir_a` instead of `test_dir_b` as expected ### Example Project (If possible, please create an example project here on GitLab.com that exhibits the problematic behavior, and link to it here in the bug report) (If you are using an older version of GitLab, this will also determine whether the bug is fixed in a more recent version) ### What is the current *bug* behavior? File is uploaded to the wrong path. ### What is the expected *correct* behavior? File should be uploaded to the right path. ### Relevant logs and/or screenshots (Paste any relevant logs - please use code blocks (```) to format console output, logs, and code as it's tough to read otherwise.) ### Output of checks This bug happens on GitLab.com. #### Results of GitLab environment info <details> <summary>Expand for output related to GitLab environment info</summary> <pre> (For installations with omnibus-gitlab package run and paste the output of: `sudo gitlab-rake gitlab:env:info`) (For installations from source run and paste the output of: `sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`) </pre> </details> #### Results of GitLab application Check <details> <summary>Expand for output related to the GitLab application check</summary> <pre> (For installations with omnibus-gitlab package run and paste the output of: `sudo gitlab-rake gitlab:check SANITIZE=true`) (For installations from source run and paste the output of: `sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true`) (we will only investigate if the tests are passing) </pre> </details> ### Possible fixes (If you can, link to the line of code that might be responsible for the problem)