Bug: :n file suffix doesn't scroll if browser (firefox) wasn't already open

[tuurep]

Description

When using the :n CLI file suffix to scroll to a certain line, if firefox wasn't already open, the viewer doesn't scroll.

(viv launches firefox).

Practical use case where this matters: using the vim-plugin, you want to render the markdown on the line you're currently looking at in Vim.

To Reproduce

1. Have firefox set as default browser.
2. With no browser running:

• $ viv README.md:90 (example: this repo's README.md)

3. Doesn't scroll after opening the browser and viewer (opens at the top)

Context

Arch Linux

vivify-server v0.6.3.r0.g5d07d16-1-aur

vivify-git (AUR)

[tuurep]

Please comment if this happens on browsers other than firefox, too

[jannis-baum]

I finally got to check this and can confirm that it doesn't work on my Firefox either. However on both Safari and Chromium it scrolls as it should.

[tuurep]

Note: we couldn't completely fix this on firefox (especially Linux), but the PR makes it happen only very infrequently (~1/20 of launches) in a lot of cases.