LXSeries Lighting Software

I just made a new custom symbol by making a copy of an existing one.
That worked just as normal but as soon as I left LXBeams to have a look at the new lamps different specified values in a pdf or a website I wasn't very welcome back...

I check my pdf to see that a tight beam angle is to be set to 12 degrees and then I return to LXBeams to enter that value...
But no. It's then impossible to add that value. The properties window that I left open is now locked and will no longer let me enter any values.
So I close and reopen it, and then it works as expected again. slightly annoying

Seems like some minor bug in LXBeams Version 6.0.3 (17729.1)

It is likely that your window lost focus when you switched away. One indication of this is that the OK button is no longer colored blue. Clicking on the title bar of the main plot window should restore focus, the OK button becomes blue and the table should allow entry again.