Log is scrolling slowly when rendering dialog

When opening the log tab of the wrobot dialog for the first time the log lines are visibly scrolling down. Seems like all lines are rendered to the widget from the start of the log file. This is especially annoying when having the bot open for a longer time. Normally one is interested in the last lines.

Maybe it would be better to render the lines from the end or first render the last N lines, show them to the user so that they fill the whole visible widget and then render the rest of the log in the background. Or something similar.