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Fails to launch -- qt helper lib package no longer needed on debian?

After a recent debian testing update, I started running into this behavior when trying to launch both teamviewer preview and stable:

./TeamViewer: /opt/teamviewer/tv_bin/RTlib/qt/lib/libQt5Core.so.5: version `Qt_5.15' not found (required by /usr/lib/x86_64-linux-gnu/libQt5WebKitWidgets.so.5)
./TeamViewer: /opt/teamviewer/tv_bin/RTlib/qt/lib/libQt5Core.so.5: version `Qt_5.15' not found (required by /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5)
./TeamViewer: /opt/teamviewer/tv_bin/RTlib/qt/lib/libQt5Core.so.5: version `Qt_5.15' not found (required by /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5)
./TeamViewer: /opt/teamviewer/tv_bin/RTlib/qt/lib/libQt5Core.so.5: version `Qt_5.15' not found (required by /usr/lib/x86_64-linux-gnu/libQt5WebChannel.so.5)
./TeamViewer: /opt/teamviewer/tv_bin/RTlib/qt/lib/libQt5Core.so.5: version `Qt_5.15' not found (required by /usr/lib/x86_64-linux-gnu/libQt5Positioning.so.5)
./TeamViewer: /opt/teamviewer/tv_bin/RTlib/qt/lib/libQt5Core.so.5: version `Qt_5.15' not found (required by /usr/lib/x86_64-linux-gnu/libQt5Sensors.so.5)

I have debian's libqt5webkit5 and webengine packages installed. qt5 core is version 5.15. On a lark I just deleted the RTlib directory entirely to see if I didn't need the teamviewer-supplied qt libs, and it actually worked. Honestly I'm not sure what exactly happened, but the qt56-teamviewer dependency seems to be breaking things now.

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