After install, cloudshell-nmon screen visible for one second, afterwards replaced by underscore cursor only in upper left

[emk2203]

After installation on an up-to-date XU4 Bionic install via the .deb package, a restart gives me a screen with only a blinking underscore cursor in the upper left. Before the cursor appears, I think I can see the border of the proper nmon display appear for a short moment.

System is XU4 with Bionic 18.04.2, kernel 4.14.102-156, hardware CloudShell 1. The Display is working properly otherwise (I had cloudshell-lcd installed before).

Service is enabled and running:

odroid@XU4CS2T:~$ sudo systemctl status cloudshell-nmon
[sudo] password for odroid: 
● cloudshell-nmon.service - "ODROID Cloudshell NMON via LCD"
   Loaded: loaded (/lib/systemd/system/cloudshell-nmon.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2019-03-15 11:40:50 CET; 5min ago
 Main PID: 679 (cloudshell-nmon)
   CGroup: /system.slice/cloudshell-nmon.service
           ├─679 /bin/bash /bin/cloudshell-nmon
           └─688 /bin/nmon-xu4

Mar 15 11:40:50 XU4CS2T systemd[1]: Started "ODROID Cloudshell NMON via LCD".
Mar 15 11:40:50 XU4CS2T cloudshell-nmon[679]: pid 679's current affinity list: 0-7
Mar 15 11:40:50 XU4CS2T cloudshell-nmon[679]: pid 679's new affinity list: 1

When I login via ssh and do a switch with sudo chvt 1 and back to sudo chvt 8, nmon gets actually displayed as it should.