Blank fields in the symbol editor

Description

If I edit symbol properties in the schematic and modify a field it turns blank, although it contains information. The field becomes visible, if I leave the window with the mouse courser. This problem occurs in every field and for me there is a chance of 50% to reproduce it. It can be reproduced on another pc too (also running Ubuntu 20.04.4 LTS).

The problem was also described here under point "2.", but still exists in V. 6 : https://forum.kicad.info/t/editing-issues-in-5-99-blank-text-boxes-or-squished-text/31653

blank-field-bug

Steps to reproduce

  1. mark any component
  2. edit proberties (shortcut "E")
  3. left click on a field

KiCad Version

Application: KiCad Schematic Editor

Version: 6.0.6-3a73a75311~116~ubuntu20.04.1, release build

Libraries:
	wxWidgets 3.0.4
	libcurl/7.68.0 OpenSSL/1.1.1f zlib/1.2.11 brotli/1.0.7 libidn2/2.2.0 libpsl/0.21.0 (+libidn2/2.2.0) libssh/0.9.3/openssl/zlib nghttp2/1.40.0 librtmp/2.3

Platform: Linux 5.4.0-122-generic x86_64, 64 bit, Little endian, wxGTK, ubuntu, x11

Build Info:
	Date: Jun 20 2022 15:49:56
	wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
	Boost: 1.71.0
	OCC: 7.5.2
	Curl: 7.83.1
	ngspice: 36
	Compiler: GCC 9.4.0 with C++ ABI 1013

Build settings:
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON

Ubuntu 20.04.4 LTS

Edited by KiCad Bot