EEschema - symbols, values and references disappear after being selected

Turns out, that happens after running DRC. If there are any errors, then the behavior is triggered.

Fixed in revision 937e3c2d4890a9b3f892b586a5c1d0432b12cf98
https://git.launchpad.net/kicad/patch/?id=937e3c2d4890a9b3f892b586a5c1d0432b12cf98

The descripted bug is much larger:
The text fields of all symbols in a sheet disappear from the sheet. The text fields appear somewhere outside of the sheet.

requirement:
Hierachial schematic

Description:
1. Running DRC
2. Open hierarchial sheet
3. leave sheet
4. Open same or other sheet
   The symbol outlines are in place. The text fields move out of the sheet.

Application: Eeschema
Version: (5.1.0-1426-g120637bd9), release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.61.1 OpenSSL/1.1.1 (WinSSL) zlib/1.2.11 brotli/1.0.6 libidn2/2.0.5 libpsl/0.20.2 (+libidn2/2.0.5) nghttp2/1.34.0
Platform: Windows 8 (build 9200), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
    wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8)
    Boost: 1.68.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.61.1
    Compiler: GCC 8.2.0 with C++ ABI 1013

Build settings:
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

I'm still seeing this issue in the latest nightly release

Can confirm that all the text fields and portions of certain symbols shift of the sheet. After previously described steps, if you highlight the whole schematic and then click anywhere else on the sheet to de-select it, you end up with a blank schematic (no text fields)

@Devs, can anyone reproduce this?

Added to #3

After running DRC -> >=1 error detected

Do the steps in "Test project" (Attachment test.zip
0. Open schematic
1. Run DRC -> 2 errors
2.Open Sheet T1
3. Leave sheet
4. Open Sheet T2
5. Leave sheet
-> Global sheet "Test.sch" textfields shift out of sheet (bottom right)
6. Open sheet T1 (the left one)
-> The same result: textfields moved from parts to bottom right.

Reproduces for me.

Application: Eeschema
Version: (5.1.0-1439-gedc05b5d5), debug build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.54.0 LibreSSL/2.6.5 zlib/1.2.11 nghttp2/1.24.1
Platform: Mac OS X (Darwin 18.6.0 x86_64), 64 bit, Little endian, wxMac
Build Info:
    wxWidgets: 3.0.4 (wchar_t,STL containers,compatible with 2.8)
    Boost: 1.70.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.54.0
    Compiler: Clang 10.0.1 with C++ ABI 1002

Build settings:
    KICAD_SCRIPTING=OFF
    KICAD_SCRIPTING_MODULES=OFF
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=OFF
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    KICAD_SCRIPTING_ACTION_MENU=OFF
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

Here is a video

Update:

 Using "standard graphics" instead of "accelerated graphics" does not show the issue and text is back in place.

Also switching from "standard" to "accelerated" the error markers disappear, while switching from "accelerated graphics" to "standard graphics" they reappear.

...so it seems related to accelerated graphics on my platform (Debian Linux).

---------------------------------------------------------------------
Application: Eeschema
Version: (5.1.0-1450-g38fc51c3b), release build
Libraries:
    wxWidgets 3.0.2
    libcurl/7.52.1 OpenSSL/1.0.2s zlib/1.2.8 libidn2/0.16 libpsl/0.17.0 (+libidn2/0.16) libssh2/1.7.0 nghttp2/1.18.1 librtmp/2.3
Platform: Linux 4.9.0-8-amd64 x86_64, 64 bit, Little endian, wxGTK
Build Info:
    wxWidgets: 3.0.2 (wchar_t,wx containers,compatible with 2.8) GTK+ 2.24
    Boost: 1.69.0
    OpenCASCADE Community Edition: 6.8.0
    Curl: 7.52.1
    Compiler: GCC 6.3.0 with C++ ABI 1010

Build settings:
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

Marker drawing translates the GAL, but doesn't Save/Restore it.

@Art and @Eberhard, thanks much for tracking this down.

Fixed in revision 56bf72cc5d3f68b349b30b8e1151564180e342c5
https://git.launchpad.net/kicad/patch/?id=56bf72cc5d3f68b349b30b8e1151564180e342c5