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PcbNew: Skew Tuning reporting both tracks as too long

Description

I have a design with three differential pairs. Matching the skew of two of the three differential pairs worked perfectly fine. But tuning the skew of the third differential pair is not possible.

KiCad returns Too long on both tracks. Thus no Skew Tuning possible.

Screenshot_from_2022-05-31_13-06-08 Screenshot_from_2022-05-31_13-06-12

I'm not sure if KiCad can't tune the Skew due to no space or something else and wrongly reports Too long on both tracks. I was able to tune the Skew after rerouting the affected differential pair above the connector (see screenshot).

Screenshot_from_2022-05-31_14-10-08

Steps to reproduce

  1. Open attached Project
  2. Try to tune the Skew of the Differential Pair DSI_D1N/DSI_D1P

KiCad Version

Application: KiCad PCB Editor

Version: (6.0.5), release build

Libraries:
	wxWidgets 3.0.5
	libcurl/7.83.1 OpenSSL/1.1.1o zlib/1.2.12 brotli/1.0.9 zstd/1.5.2 libidn2/2.3.2 libpsl/0.21.1 (+libidn2/2.3.0) libssh2/1.10.0 nghttp2/1.47.0

Platform: Linux 5.18.0-arch1-1 x86_64, 64 bit, Little endian, wxGTK, gnome, wayland

Build Info:
	Date: May  3 2022 02:43:29
	wxWidgets: 3.0.5 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
	Boost: 1.78.0
	OCC: 7.5.3
	Curl: 7.83.0
	ngspice: 36
	Compiler: GCC 11.2.0 with C++ ABI 1016

Build settings:
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON

kicad_diff_too_long_problem.zip