An issue with this userscript in Greasemonkey (ok in Tampermonkey & latest Scriptish)

[darkred]

(In continuation of this thread)

It's about this userscript: IMDB - add Rottentomatoes info

Whenever loading an imdb page
initially the part of the page that is just below the navbar
is displayed a lot lower for 1-2 seconds (screenshot taken from the video capture below)
and then it moves up in it's proper position
together with the script's RT info.

Video capture (0.8 MB, wmv).

On the other hand, in Chrome 33 with latest Tampermonkey
and in Firefox 27 with latest Scriptish-nightly 0.1.12a (page link)
the problem NEVER occurs.

I believe that it's a Greasemonkey issue.

PS. Always in a clean Firefox profile, with only Greasemonkey/ Scriptish (or Tampermonkey in new profile in Chrome) and the userscript installed.

[arantius]

Please provide a reduced test case. An (e.g.) ~10 line script, not a ~500 line one.

[darkred]

I wish I could! Unfortunately, I'm not it's author and my knowledge in javascript is limited.

[darkred]

Also, I just tried the new Scriptish stable release v01.12
-you might want to check the changelog in the above link -
and the problem never occurs.

The problem is mostly obvious when
while in an imdb movie page (example: http://www.imdb.com/title/tt0076759 )
you press F5 or Ctrl+F5,
or simply by clicking the imdb link;
in GM it occurs every time, in Scriptish never.

[hurda]

It also does happen for me with Scriptish, and also when neither GM or Scriptish are enabled

Because of this I doubt this is a problem with GM/Scriptish or the script but just the site having a quirk.

[darkred]

You're right: the problem occurs in Scriptish too, in even in a clean profile, but in another case.
To reproduce:

• Launch a new Firefox 29 profile
• paste an imdb page in the awesomebar, eg, http://www.imdb.com/title/tt0111282/ Wait for loading to finish
• paste another imdb page in the awesomebar, eg, http://www.imdb.com/title/tt0111282/ Wait for loading to finish
• Switch back and forth a couple of times between these two pages using the arrow buttons in the toolbar (Go back/forward one page).
  The issue will occur.

It's just that the problem is more apparent with either GM or Scriptish and the forementioned script.

But, it doesn't appear in IE11 or Chrome 34.
Therefore, I think it's a Firefox bug.

So I filed this in bugzilla: bug 1005047 Going back and forth two imdb pages causes a display glitch for 1-2 seconds

[darkred]

It was a Firefox bug, indeed.
And, it no longer occurs (I currently have FF 38.0.1)