Some of the symbols in the library have datasheet field visibility on as a default. After I'm done capturing schematic, I try to populate all the datasheets for all the symbols using "Edit Symbol Fields" option. However, it kind of defeats the purpose of the tool, because there is no way to affect visibility of the field in the "Edit Symbol Fields" tool. So afterword you have to go through each individual component and uncheck the visibility check mark. There needs to be visibility check marks right there in the tool. You can add the checkmarks easily in the left pane, right next to Show and Group By columns.
Application: kicad
Version: (6.0.0-rc1-dev-1027-g90233e5ec), release build
Libraries:
wxWidgets 3.0.3
libcurl/7.54.1 OpenSSL/1.0.2l zlib/1.2.11 libssh2/1.8.0 nghttp2/1.23.1 librtmp/2.3
Platform: Windows 8 (build 9200), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
wxWidgets: 3.0.3 (wchar_t,wx containers,compatible with 2.8)
Boost: 1.60.0
OpenCASCADE Community Edition: 6.8.0
Curl: 7.54.1
Compiler: GCC 7.1.0 with C++ ABI 1011
Build settings:
USE_WX_GRAPHICS_CONTEXT=OFF
USE_WX_OVERLAY=OFF
KICAD_SCRIPTING=ON
KICAD_SCRIPTING_MODULES=ON
KICAD_SCRIPTING_PYTHON3=OFF
KICAD_SCRIPTING_WXPYTHON=ON
KICAD_SCRIPTING_ACTION_MENU=ON
BUILD_GITHUB_PLUGIN=ON
KICAD_USE_OCE=ON
KICAD_USE_OCC=OFF
KICAD_SPICE=ON
One more thing here related to the datasheet field visibility. Let's say that you entered a link in the datasheet field for a symbol and discovered that all of them are visible now throughout the whole schematic. You go back and try to delete it utilizing the same tool, only to discover that when you delete a field and hit save nothing changes. You actually have to enter something into the cell, even if it is just a space and then hit save for the new value to take.