Flag-lines highlighter is unstable when there is only one line in document

[alekfed]

When I start new documents and there are no errors and warnings, there is no flag line on the left, but as I enter new characters this line appears and disappears on every inserted character so the whole window start to jitter until I start a new line. If I first insert an empty line in the document and start to enter characters on the second line, flag line will appear and won't disappear anymore, so that's the way I usually work - from the second line (and deleting that empty line after inserting some text).

Perhaps, it's not an issue with kak-lsp itself, but it's especially apparent with kak-lsp.

Is there any other solution of this problem instead of "always start from the second line"?