Cannot have nested borderless panes

I would like to include the time in my status bar. My theme so far looks like:

layout {
    pane
    pane size=1 split_direction="vertical" {
        pane size=10 borderless=true {
            command "watch"
            args "-t" "-n" "1" "date" "+%H:%M"
        }
        pane borderless=true {
            plugin location="zellij:compact-bar"
        }
    }
}

So far so good, this displays the time as desired.

I wanted to get rid of the the border above, by adding borderless=true here:

pane size=1 split_direction="vertical" borderless=true {

However this gives the error

× Failed to parse Zellij configuration
    ╭─[<my layouts>/mycompact:2:1]
  2 │         pane
  3 │ ╭─▶     pane size=1 split_direction="vertical" borderless=true {
  4 │ │           pane size=10 borderless=true {
  5 │ │               command "watch"
  6 │ │               args "-t" "-n" "1" "date" "+%H:%M"
  7 │ │           }
  8 │ │           pane borderless=true {
  9 │ │               plugin location="zellij:compact-bar"
 10 │ │           }
 11 │ ├─▶     }
    · ╰──── Cannot have both properties (borderless) and nested children
 12 │     }

Desired behaviour would be no error and nested borderless panes.

Basic information

zellij --version: zellij 0.35.1 stty size: 50 190 uname: Linux