Switching through editor tabs "random"

[ghost]

I've set up shortcuts to switch files/editor tabs with ctrl + alt + arrow keys ("go to next file", "go to previous file"). Sometimes the movement isn't linear, i.e. not tab1 → tab2 → tab3 → tab4 but tab1 → tab3 → tab4 → tab2. Sometimes this seems to happen spontaneously, but more often after I use the two arrow buttons (<>) in the top-right of the editor.

What steps will reproduce the problem?

1. Navigate to tab somewhere in the middle, i.e. if t1, t2, t3, t4, t5, then t3.
2. Press an arrow button a couple of times in one direction or the other.
3. Use keyboard shortcuts to move through file tabs.

What is the expected output? What do you see instead?
Switching files should occur sequentially, i.e. 1 → 2 → 3 or 3 → 2 → 1.

Please provide any additional information below
If I open the file switcher and use the arrow keys to run once through all the files in the file switcher the bug disappears.

Versions and main components

• Spyder Version: 3.1.3
• Python Version: 3.6.0
• Qt Version: 5.6.2
• PyQt Version: 5.6.0
• Operating system: OS X El Capitan 10.11.16 (Retina)

Dependencies

Please go to the menu entry Help > Optional Dependencies (or
Help > Dependencies), press the button Copy to clipboard
and paste the contents below:

jedi =0.9.0 : 0.9.0 (OK)
matplotlib >=1.0 : 2.0.0 (OK)
nbconvert >=4.0 : 5.1.1 (OK)
numpy >=1.7 : 1.12.1 (OK)
pandas >=0.13.1 : 0.19.2 (OK)
pep8 >=0.6 : 1.7.0 (OK)
psutil >=0.3 : 5.2.2 (OK)
pyflakes >=0.6.0 : 1.5.0 (OK)
pygments >=2.0 : 2.2.0 (OK)
pylint >=0.25 : 1.6.4 (OK)
qtconsole >=4.2.0: 4.3.0 (OK)
rope >=0.9.4 : 0.9.4-1 (OK)
sphinx >=0.6.6 : 1.5.4 (OK)
sympy >=0.7.3 : 1.0 (OK)

[goanpeca]

@rlaverde add new code recently that most likely fixes this behavior. Any additional comments @rlaverde ?

[rlaverde]

The actual behavior (spyder 3.1.4) is a little odd, It iterate the tabs according the order they were last activated

I wrote a fix for this behavior #4302 that will be part of spyder 3.2 (to be released in June), tabs will change using MRU (Most recent used) behavior . Meanwhile you could use Ctrl+Repag Ctrl+AvPag to change between tabs.