druid:on_input returns nil with scroll

[BlackMATov]

-- drag.lua
function M.on_input(self, action_id, action)
    if action_id ~= const.ACTION_TOUCH and action_id ~= const.ACTION_MULTITOUCH then
        return
    end

should be return false?

[Insality]

Thank you! Is it problem? I'll fix, but behaviour with nil and false should be equal

[BlackMATov]

Is it problem?

Unfortunately yes:

ERROR:GUI: The function on_input must either return true/false, or no value at all.

[Insality]

Fixed in 0.4.3, thanks!
Fixed in several places