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Laggy input in “Assign Footprints - Footprint Filters”

Description

When selecting “Run footprint assignment tool” and placing the cursor in the textbox “Filter footprint list by library” the input is severely lagging. After every character typed, KiCAD is “busy” and doesn't accept input. Therefore it's required to slowly type character by character otherwise it drops characters.

laggy_input

Steps to reproduce

It's easiest to reproduce on a slow machine without SSD.

  1. Open the footprint assignment tool
  2. Place cursor in the textbox “Filter footprint list by library”
  3. (Quickly) type “pinheader”

Actual Result

The textbox contains e.g. “pnr”, “pner”, “pher” (actual string varies). Some characters were swallowed because the machine was busy after the first character had been entered.

Desired Result

The text box should contain “pinheader” regardless of how fast or busy the machine is.

KiCad Version

Application: KiCad Schematic Editor

Version: 6.0.6+dfsg-1, release build

Libraries:
	wxWidgets 3.0.5
	libcurl/7.84.0 OpenSSL/3.0.4 zlib/1.2.11 brotli/1.0.9 zstd/1.5.2 libidn2/2.3.3 libpsl/0.21.0 (+libidn2/2.3.0) libssh2/1.10.0 nghttp2/1.47.0 librtmp/2.3 OpenLDAP/2.5.12

Platform: Linux 5.18.0-2-amd64 x86_64, 64 bit, Little endian, wxGTK, lightdm-xsession, x11

Build Info:
	Date: Jun 20 2022 18:00:05
	wxWidgets: 3.0.5 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
	Boost: 1.74.0
	OCC: 7.5.2
	Curl: 7.83.1
	ngspice: 37
	Compiler: GCC 11.3.0 with C++ ABI 1016

Build settings:
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON