The issue is an erroneous plist:
/Applications/STM32CubeIDE.app/Contents/Info.plist
There are missing sections under the Eclipse key.
Below is a functional Info.plist, please compare to yours and modify if need be...
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleExecutable</key>
<string>stm32cubeide</string>
<key>CFBundleGetInfoString</key>
<string>Eclipse 4.13 for Mac OS X, Copyright IBM Corp. and others 2002, 2019. All rights reserved.</string>
<key>CFBundleIconFile</key>
<string>STM32CubeIDE_icons.icns</string>
<key>CFBundleIdentifier</key>
<string>com.st.stm32cube.ide.mcu.rcp.product</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>STM32CubeIDE</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>1.3.1</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>1.3.1</string>
<key>NSHighResolutionCapable</key>
<true/>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>LSEnvironment</key>
<dict>
<key>PATH</key>
<string>/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin</string>
</dict>
<key>Eclipse</key>
<array>
<string>-keyring</string>
<string>~/.eclipse_keyring</string>
<string>-vm</string>
<string>jre/Contents/Home/lib/jli/libjli.dylib</string>
</array>
<key>CFBundleDisplayName</key>
<string>STM32CubeIDE</string>
</dict>
</plist>
