If I have two Qt Creator windows open and then try to start Akregator, it crashes on startup. If I close one Qt Creator window, Akregator starts OK. Similarly, if I have Akregator already running, I can start only one instance of Qt Creator. If I try to get a second instance of Qt creator running, its window doesn't come up. The second process just takes up 25% CPU, without having any window shown. Fedora 25, x86_64 Akregator v5.3.0 (QtWebEngine) KDE Frameworks 5.27.0 Qt 5.7.0 (built against 5.7.0) Qt Creator v4.1.0 Based on Qt 5.7.0 (GCC 6.2.1 20160916 (Red Hat 6.2.1-2), 64 bit) All packages installed from Fedora repos.
Seems to work OK now. Fedora 25, x86_64 Akregator 5.4.3 KDE Frameworks 5.34.0 Qt 5.7.1 (built against 5.7.1) Qt Creator 4.1.0 Based on Qt 5.7.1 (GCC 6.3.1 20161221 (Red Hat 6.3.1-1), 64 bit)