Pressing properties hotkey (E) while a tool is active selects something and opens the properties dialog

Description

While a tool like zone drawing or dimension is active and I'm working on it, if I press E (properties hotkey) something which is under the cursor is selected and its properties dialog is opened. That shouldn't happen.

On the other hand, if I'm in the middle of placing some item and press E, the dialog of that item is opened.

Steps to reproduce

1. Start drawing a zone.
2. move the cursor on top of some existing item which can be selected and edited.
3. Press E.
4. The item under the cursor is selected and its properties dialog opened.

KiCad Version

Version: (5.99.0-3334-gaa24fe288), debug 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 5.4.0-47-generic x86_64, 64 bit, Little endian, wxGTK

Build Info:
	Date: Sep 13 2020 09:46:14
	wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
	Boost: 1.71.0
	OCE: 6.9.1
	Curl: 7.68.0
	Compiler: GCC 9.3.0 with C++ ABI 1013

Build settings:
	KICAD_SCRIPTING=ON
	KICAD_SCRIPTING_MODULES=ON
	KICAD_SCRIPTING_PYTHON3=ON
	KICAD_SCRIPTING_WXPYTHON=ON
	KICAD_SCRIPTING_WXPYTHON_PHOENIX=ON
	KICAD_SCRIPTING_ACTION_MENU=ON
	BUILD_GITHUB_PLUGIN=OFF
	KICAD_USE_OCE=ON
	KICAD_SPICE=OFF
	KICAD_STDLIB_DEBUG=OFF
	KICAD_STDLIB_LIGHT_DEBUG=OFF
	KICAD_SANITIZE=OFF