I've recently noticed that using the keyboard for navigation in lobster frequently breaks.
For example, I can typically only hit page up/down once, pressing the same key again just jitters the logs. I have to click with the mouse on the log frame again before another page up/down will work.
The same happens for the up and down arrow keys. It seems that when starting from the same spot, holding the down arrow key will get as far as what a single page-down would do before getting stuck.
The document.activeElement before and after the problem stays as the BODY element. My guess is this has to do with how log lines get dynamically added/removed from the DOM confusing the browser.