The first two lines of "top" output is not visible in textboxes

[anta5010]

I don't see the top two lines (with uptime, load averages, taks, etc) of the "top" command output in textboxes.

This is the output of the command:

top - 16:17:43 up 1 day,  9:59,  1 user,  load average: 3.86, 5.15, 5.02
Tasks: 1955 total,   4 running, 1923 sleeping,   0 stopped,  28 zombie
%Cpu(s):  7.1 us,  2.2 sy,  0.0 ni, 89.6 id,  0.5 wa,  0.0 hi,  0.5 si,  0.0 st
KiB Mem : 73932664 total, 20585044 free, 42106204 used, 11241416 buff/cache
KiB Swap: 16777212 total, 16777212 free,        0 used. 29785392 avail Mem

This is what I see in a textbox:

┌─ SSH AP12-CTRL3 ─────────────────────────────────────────────────────────────────┐
│                                                                                  │
│ %Cpu(s): 25.8 us,  4.5 sy,  0.0 ni, 67.1 id,  1.6 wa,  0.0 hi,  1.1 si,  0.0 st  │
│ KiB Mem : 73932664 total, 19868300 free, 42800772 used, 11263592 buff/cache      │
│ KiB Swap: 16777212 total, 16777212 free,        0 used. 29081084 avail Mem       │
│     PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND    │
│   40153 42435     20   0  505252 262224   2312 R  87.5  0.4 184:04.73 neutron-+  │
│   39890 42434     20   0   17.1g   1.8g 145996 S  78.5  2.6 642:54.60 mysqld     │
│   40149 42435     20   0  504192 261164   2312 S  75.0  0.4 184:18.85 neutron-+  │
│   36016 42439     20   0   19.5g   1.1g   4468 S  71.5  1.5 941:18.90 beam.smp   │
│   40146 42435     20   0  534168 284064   2312 S  62.5  0.4 174:22.72 neutron-+  │
│  398434 openvsw+  10 -10 2310908 107236  13752 S  39.0  0.1 198:12.35 ovs-vswi+  │
└──────────────────────────────────────────────────────────────────────────────────┘

I tried moving and resizing of the textbox, doesn't help. Textbox config is very simple:

  - title: SSH AP12-CTRL3
    position: [[0, 25], [50, 13]]
    rate-ms: 2000
    pty: true
    init: $ctrl3
    sample: top

I can see the two missing line if I change sample: top to sample: echo; top. But, these lines would be printed as second and third and the first line would contain data from the last:

┌─ SSH AP12-CTRL3 ─────────────────────────────────────────────────────────────────┐
│                                                                                  │
│ 24856 42435     20   0  652288 321340   8144 S   8.5  0.4 146:25.65 neutron-+    │
│ top - 16:24:08 up 1 day, 10:05,  2 users,  load average: 5.34, 5.88, 5.51        │
│ Tasks: 2025 total,   6 running, 1989 sleeping,   0 stopped,  30 zombie           │
│ %Cpu(s): 13.9 us,  3.0 sy,  0.0 ni, 81.7 id,  0.7 wa,  0.0 hi,  0.7 si,  0.0 st  │
│ KiB Mem : 73932664 total, 20154456 free, 42510780 used, 11267428 buff/cache      │
│ KiB Swap: 16777212 total, 16777212 free,        0 used. 29378672 avail Mem       │
│     PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND    │
│   40148 42435     20   0  523576 274008   2312 R  92.5  0.4 179:48.86 neutron-+  │
│   36016 42439     20   0   19.5g   1.1g   4468 S  57.0  1.5 943:32.69 beam.smp   │
│   40151 42435     20   0  514352 271324   2312 R  56.0  0.4 179:21.51 neutron-+  │
└──────────────────────────────────────────────────────────────────────────────────┘