After a RefreshAndUpdate or Update check (issued by ApperD) apper-sentinel times out after some time. This, however, is not the case when updates are succesfully installed and there was no need to log out or reboot. apper-sentinel stays active forever, which blocks any future cache-refreshes (see UpdateIcon.cpp->refresh).

Reproducible: Always

Steps to Reproduce:
1. downgrade a package that needs no logout/reboot
2. wait till apper shows the 'update' for the downgraded package
3. update the package (hope it will be succesfull
4. watch apper-sentinel never times out
Actual Results:  
apper-sentinel never time out, blocking cache-refreshes

Expected Results:  
apper-sentinel time out, cache-refreshes are possible again

It looks like apper-sentinel should watch (the results of) the transaction. In ApperSentinel.cpp I see:
    // connect the watch transaction coming from the updater icon to our watcher
//     connect(m_updateIcon, SIGNAL(watchTransaction(const QString &, bool)),
//             m_transWatcher, SLOT(watchTransaction(const QString &, bool)));

Is this what can do the trick?