Have you got any 'Quick Filter' values set, or have you clicked the ADS-B Only button?
Click the 'Show All' button to make sure that you have all aircraft showing in MyFlights. You were looking in MyFlights and not Network?
I sort by Mode S code so that all my military aircraft show together. Did Mode S code 43C26D appear in the list without any aircraft details such as registration/type maybe?
After the program loads, I always type into the filter Mode S > 43C* and then click twice on the list heading of Mode S.
(It would be better if this could be retained between sessions.)Then using the sideways arrows, I can click on top or bottom. Then all UK Mil. appear at the top and all US Mil. at the bottom. I am using MyFlights and not network as Mil. wont generally appear there! I'm not using 'Show All' as I'm mainly interested in Mil. a/c as not much civilian in my vicinity!
As 43C26D & 43C247 are within numerical display range they should appear, which they normally do. Other codes higher and lower in value were visible at the time. As the sorting was on Mode S, it suggests a bug somewhere.
While working in another program; when I get an alert, I click on the alert panel, which places RB in the foreground. Then click the top or bottom arrow, depending on the Mod S code displayed in the alert panel.
(It would be better if the alert subject a/c automatically became the selected a/c in the list.)Reg.