Intersheet references only link on first number

Description

Peek_2021-09-16_16-03

Steps to reproduce

1. Open attached project
2. Note that you cannot click on second reference number

intersheet.zip

KiCad Version

Application: KiCad-Schaltplan-Editor

Version: (5.99.0-12372-g1f8b72c194), release build

Libraries:
	wxWidgets 3.0.5

Platform: Linux 5.8.0-3-amd64 x86_64, 64 bit, Little endian, wxGTK, xfce, x11

	wxWidgets: 3.0.5 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
	Boost: 1.71.0
	OCC: 7.5.1
	Curl: 7.74.0
	ngspice: 34
	Compiler: GCC 10.2.1 with C++ ABI 1014

Build settings:
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON