Subtitles sync issues

I use K-Lite Mega with MPC, and I can't find the slider control for adjusting the sync/delay of subtitles. Where did it go, and is it coming back? This issue is rather annoying and under Options/Subtitles, there is no way to adjust them. Using F1/F2 doesn't work either. Instead, F1 opens my internet browser and F2 opens my email app.

There is no slider and there never has been one. You must use F1/F2.

Perhaps you are not using the internal subtitle renderer.

As I said, F1/F2 don't work for me.

Also, where do I find the internal subtitle renderer?

Options > Playback > Output

Thanks. I checked and I am indeed using the internal subtitle renderer.

Then I do not know what is wrong on your computer. The keys should work when player window has focus.

Indeed they should. Good grief. It always happens to me.