Hi, thanks yes I think that is working correctly now.  But a much worse  bug for high resolution Mac and Windows machines has arisen.
See my bug [Bug 1690601] 
When you are on a high resolution (retina) Mac or Windows, and save in mirror, when you reopen it opens only in the corner.
It is less likely if you are mirroring with a 1920x1080 projector but still often does.
I put screen captures from Mac and Win10 into that bug thread.




> On Sep 19, 2018, at 2:26 AM, Alexander Wolf <email address hidden> wrote:
> 
> ** Changed in: stellarium
>    Milestone: 0.13.1 => None
> 
> ** Project changed: stellarium => stellarium-website
> 
> -- 
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/676260
> 
> Title:
>  Spherical mirror distortion doesn't work correctly
> 
> Status in Stellarium Website:
>  Fix Released
> 
> Bug description:
>  Spherical mirror works in 0.10.2. When I run the same parameters in
>  0.10.5 I get an image which is not nearly correct. Screen shot is
>  attached.
> 
>  2010-11-16T16:27:32
>  Windows XP
>  Compiled with GCC 4.4.0
>  Qt runtime version: 4.6.2
>  Qt compilation version: 4.6.2
>  Addressing mode: 32-bit
>  Total memory: 2045 MB (unreliable)
>  Total virtual memory: 2047 MB (unreliable)
>  Physical memory in use: 30%
>  Processor speed: 2126 MHz
>  Processor name: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz
>  Processor speed: 2126 MHz
>  Processor name: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz
>  C:\Program Files\Stellarium 0.10.5\stellarium.exe
>   -------------------------------------------------------
>  [ This is Stellarium 0.10.5 - http://www.stellarium.org ]
>  [ Copyright (C) 2000-2010 Fabien Chereau et al ]
>   -------------------------------------------------------
>  Writing log file to: "C:/Documents and Settings/Blovegro/Application Data/Stellarium/log.txt"
>  File search paths:
>    0 . "C:\Documents and Settings\Blovegro\Application Data\Stellarium"
>    1 . "."
>  Attempting to use an existing older config file.
>  Config file is: "C:\Documents and Settings\Blovegro\Application Data\Stellarium/config.ini"
>  Qt GL paint engine is: "OpenGL2"
>  Cache directory is: "C:\Documents and Settings\Blovegro\Local Settings\Application Data\stellarium\stellarium\cache"
>  Sky language is "en"
>  Application language is "en"
>  Loading Solar System data ...
>  Loaded 38 / 38 planet orbits
>  Loading star data ...
>  "Loading "./stars/default/stars_0_0v0_1.cat": 0_0v0_1; 5013"
>  "Loading "./stars/default/stars_1_0v0_1.cat": 1_0v0_1; 21999"
>  "Loading "./stars/default/stars_2_0v0_1.cat": 2_0v0_1; 151416"
>  "Loading "./stars/default/stars_3_1v0_0.cat": 3_1v0_0; 434064"
>  Finished loading star catalogue data, max_geodesic_level: 3
>  navigation/preset_sky_time is a double - treating as jday: 2.45151e+06
>  Loaded 10051 NGC records
>  Loading NGC name data ...
>  Loaded 222 / 222 NGC name records successfully
>  Loaded 88 / 88 constellation records successfully for culture "western"
>  Loaded 85 / 85 constellation art records successfully for culture "western"
>  Loaded 89 / 89 constellation names
>  Loading constellation boundary data ...
>  Loaded 782 constellation boundary segments
>  Loading star names from "./skycultures/western/star_names.fab"
>  Loaded 230 / 230 common star names
>  Loading star names from "./stars/default/name.fab"
>  Loaded 3215 / 4359 scientific star names
>  Creating GUI ...
>  Use OpenGL framebuffer objects for viewport effect: "sphericMirrorDistorter"
>  INFO Saving screenshot in file: "C:/Documents and Settings/Blovegro/Desktop/stellarium-000.png"
>  Downloaded 0 files (0 kbytes) in a session of 27.266 sec (average of 0 kB/s + 0 files from cache (0 kB)).
> 
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