Telescope Error when scrolling

[thecontinium]

When I use ZkNotes and scroll down and then back up I get this error.

Error executing vim.schedule lua callback: .../telescope.nvim_0.1.x/lua/telescope/previewers/utils.lua:158: Expected Lua number
stack traceback:
        [C]: in function 'nvim_win_get_height'
        .../telescope.nvim_0.1.x/lua/telescope/previewers/utils.lua:158: in function ''
        vim/_editor.lua: in function <vim/_editor.lua:0>
Press ENTER or type command to continue

Going back up one at a time ie slowly does not produce the error. Holding down the up key and stopping produces many of these errors. I can't repeat this in any another Telescope "action" which is why I am raising it here.

Does anyone else experience this ?