Outline View Update Trigger

Greetings:
I am in the process of evaluating Atom as a replacement for Sublime Text; particularly for Python development. This brought me to `atom-ide-ui` and `ide-python`. As instructed, I added `atom-ide-ui` first, installed `python-language-server`, and finally `ide-python`.

All seemed to be working fine. `pyflakes` highlighted issues; `Jedi` popups displayed docstrings for methods, functions, etc. Exploring additional features, I came across the Outline view. Sadly, I was greeted with an Octocat busy icon that did not go away.

I will exclude the posts, thoughts, ideas, and various rabbit holes fallen into I encountered as I tried to find a solution. In short, Outline view works... sort of.
* If a file is opened, Outline view is "busy", but other features (i.e. `pyflakes`, etc.) work.
* Given an opened file in Atom, closing and starting Atom up again, results in a populated Outline view. However, opening another file results in a "busy" view, while switching back to the previously opened file, shows valid content.
* When Outline view is "busy", a simply modification of the file, such as typing a space or return, causes Outline view to have valid content.

I suspect that whatever `ide-python` does to populate the Outline view is not triggered when a file is first opened. However, already opened project files when Atom is started or editing a file causes the appropriate trigger.

Best regards,
frelling

P.S. These are my environment-specific details:
* Atom: (1.35.1 x64), installed from Atom repo
* Atom Packages: atom-ide-ui (0.13.0), ide-python (1.4.1)
* Python: 3.7.3+, built from source
* Python Packages: python-language-server (0.26.1), plus dependencies.
* OS: CentOS Linux release 7.6.1810
* Kernel: 3.10.0-957.10.1.el7.x86_64

Es wird keine Quelldatei und kein Test genannt. Reproduziere das Verhalten mit Atom 1.35.1, atom-ide-ui 0.13.0, ide-python 1.4.1 und dem aufgeführten Python-language-server-Setup und vergleiche das erstmalige Öffnen, den Neustart, das Wechseln zwischen Dateien und eine Bearbeitung. Als erledigt gilt die Aufgabe, wenn die Outline view beim ersten Öffnen einer Datei und nach dem Wechseln zwischen Dateien gefüllt wird, ohne dass eine Änderung erforderlich ist.

Vom Indexierungsmodell aus dem Issue-Text verfasst.