High Chair Problems in new house

@AndreaHope Hello!  I downloaded your lot but I was not able to replicate the issue you're having.  First, I played with a Mom and toddler daughter.  The Mom gave cereal to the toddler in the high chair and she ate it; no teleporting. I normally play with autonomy off, so I turned autonomy on.  The Mom gave a ham and cheese to the toddler in the high chair; again no teleporting.  Then I added a Dad and two twin brother children to better match your household description.  Again, the Mom gave cereal to the toddler in the high chair and she ate it; no teleporting.  Could you tell us where you placed your lot? I wonder if that has anything to do with the issue.  Also, please give us some more details about what the rest of the household is doing when you put the toddler in the high chair for feeding.

Aside from that, I did encounter a couple of issues causing routing failures that I thought I should mention.  There is a low hanging light fixture in the bathroom that prevented my sim from using the toilet.  Also, the toddler's potty was placed with MOO too close to the dresser my toddler was unable to use it.

Thanks for replying...   the kids i have are 1 human, 1 alien... when the toddler is put in the high chair and i give her a ham sandwhich she obviously teleports out.or the request gets cancelled.. but the mum is busy trying to feed the toddler.. the dad is trying to cook for everyone but is having issues doing that for some odd reason..there is alot of counter space, the Human Kid is trying to get a quick meal before going school, the alien kid was trying to sleep.. i also forgot to mention about the potty having issues too..ive moved the high chairs and potty everywhere possible. Open space etc but no luck.. ive added a picture of which lot and world thats the problem..and ive circled the old  lot that im currently on working fine..but with the current old lot im on..i have noticed a few routing issues there too..where they are walking through the wall next to the door or next to a gate but it doesnt really bother me. but im possibly thinking maybe i should re-make the lot again without CC.. but Pic is attached 

@AndreaHope Oh!  Now that you mentioned counterspace, I double checked the thumbnails on gallery.  When I place the lot, there are no cabinets or wall coverings in the dining / kitchen area.  I didn't get the notice about items being removed when I first placed the lot.  However, when I placed it on the lot you indicated, I did get that notice.  Something like 52 items were removed and some replaced but not the cabinets and wall coverings.  It looks like there are supposed to be drapes as well but I don't know what else might be missing.  I'm adding some screengrabs below.  Perhaps you could try removing some of that CC and test for the issue again?  Meanwhile, I can do some more testing to see if the problem occurs.

Edit: Something else I just noticed is that lot is 40x30 but in the gallery it is 30x20.  Also, your image of the worlds view, it looks like there is another structure beside the house.  All I have is the house.  I don't know if that has anything to do with the issue but just wanted to point that out.

Edit 2: I loaded up the family into the lot in HonB and still had no issue with feeding the toddler in the base game high chair shown in the above photo.  I noticed there's a chair missing.  Is it possible you're using a CC high chair?  Also, the Dad had no issues cooking.  So, I'm starting to wonder if the CC you have is causing the issues.  Also, maybe double check the placement. If you used MOO to place the cabinets, it might cause a routing failure similar to the toddler potty placement.

Not sure what MOO is.. but the items removed were my CC..kitchen had a row of  counters next to the fridge.. the kitchen had long curtains (drapes) but as for the building next to the house.. im aware.. i put the little photo studio there after the problems started but having removing my mods then seeing if i can feed the toddler....i can.. so i do believe it is a mod issue so im trying to find the bad CC/Mod

i removed my mods and re-added them bit by bit to find out which was the issue.. i removed 1 that i think could of been the problem.. i also updated Deaderpool command center aswell as removed 1 Slice of life mod..i didnt realize i had 2 but i think it might of solved it..im going to re-decorate next and put clothes back on my sims and see if its ok still.

MOO is Move Objects On. It's a cheat that allows you to place items anywhere, overlap them, etc., and while this creates some pretty/interesting/useful effects you also need to playtest it to make sure that the items are still useable.

@AndreaHope Wonderful!  I'm glad you were able to figure that out.  Have fun playing! :-)