Slackware64-current and NetworkManager

On the Lenovo T510 laptop I use to track and test Slackware-current, everything I've played with has been good so far. About a week ago, after another kernel update (4.19.48 and .49), the wifi kept dropping off when using Network Manager via the KDE network applet in the systray. Wired connectivity was fine. I at first though the Netgear R7000 router was gimpy since I had just updated it's firmware as well. The laptop would drop the connection after a few hours, and DHCP would take several minutes, if it connected at all. Usually, '/etc/rc.d/rc.networkmanager restart' (or stop, start) would fix the issue for a while. However, other devices (phones, tablets, Slackware-14.2...) remained connected with no issues. Using the command line nmcli and nmtui worked with no connectivity issues for several days. There has been another kernel update, and I haven't tried Xfce yet.

UPDATE: Looks like the updates from last week (kernel 4.19.51 now) seemed to fix this odd Network manager applet glitch.