Tripped on a cord and dropped my riser... Is this going to be a huge issue???

This looks like the fade of a longbow riser. I say this because I've soooo been there!!
Functionally, it should be fine. You'll end up with a little more glue there than you planned is all.

I would think that if you had a small pile of sanding dust at the time of glue up you could mix smooth-on and apply it to that area. Just for cosmetic effects. any excess will squeeze out when pressure is applied. I have broken those thin corners before and CA glued them back --a little tedious though.

If you could find the chipped off piece, you could just superglue it on. As said before I think it's going to be cosmetic, so it you can superglue the piece back in you'd be in business.

Or, you could shorten the riser length on both ends.  It's going to change your draw weight though so think that through first.

I like the glue sawdust filler idea.

Could you just cut that jagged corner off at an angle and glue on another small piece of wood of the same material and then shape it?

I did that on my last glue up, DURING glue up. I dropped riser and all lams, all covered in glue... busted two opposite corners. I set it aside.... I'll use it on a kids bow or something... and whipped out another in about 15 minutes and finished the glue up. I'm a dang perfectionist though... although the voids would have filled with glue and been fine, aestetically it would have bothered me, so I made another.

DURING glue up. I dropped riser and all lams, all covered in glue... busted two opposite corners.

Perfectionist huh? LOL

Wonder if one could shorten the riser an equal amount on each end, reshape and add a powerlam to regain the weight loss from shortening the riser? Just trying to think of another option even though those put forward are all good ones.

What crooked stic said.

Guess it won`t make problems but if you wan`t to do a perfect rapair you could regrind both sides and add a plam (1), I`d choose a piece of glass, modifie your stack (2)or just leave it and get ~4# less (3)...
This usually happens too my fades when I`m too fast on the spindlesander   :rolleyes: