The following logs indicate that the file system watcher detects a change of those files and that triggers an update of the keylist and the smart card view. Please check whether those files are indeed rewritten on every iteration.
[9508] org.kde.pim.libkleo: "C:/Users/Andre Heinecke/AppData/Roaming/gnupg/private-keys-v1.d/83DAC0502E57C04D7EEC05847D79429C92EEEC01.key" [9508] org.kde.pim.libkleo: "C:/Users/Andre Heinecke/AppData/Roaming/gnupg/private-keys-v1.d/FE2E7817335F19F3338EC62086B4D666F6292101.key" [9508] org.kde.pim.libkleo: "C:/Users/Andre Heinecke/AppData/Roaming/gnupg/private-keys-v1.d/961BF16F4EE095BC36EC5F6339F1BA10A561C0C5.key" [9508] org.kde.pim.libkleo: "C:/Users/Andre Heinecke/AppData/Roaming/gnupg/private-keys-v1.d/3BE5196862C68A4C7B4C850D552070A0CE772827.key"