Hoppers not picking up items from dispensers

is the hopper full?

is there any redstone locking on the hopper? any block adjacent to the hopper which has redstone power going through it will lock the hopper. 

Empty, unpowered hoppers. 

They will pick up items when thrown, but not from dispensers. I also cannot get a dispenser to transfer items into a hopper.

If you have a copy of the world available, you might like to upload a copy of it for investigation.

• On Windows 10 you can use the Export world feature.

• On Android or iOS you need to use a file explorer to navigate to Device storage > games > com.mojang > minecraftWorlds

• On Xbox or Switch the only way is to upload it to a Realm, and then download the world on Windows 10 or Android/iOS. (Please do not purchase a Realms subscription just to provide a world to us - but if you have a Realm already this may be a viable option if you wish to do so.)

If the world is larger than 10MB you can upload the world to OneDrive or a similar file sharing site, and then share the link.

Here is a copy https://1drv.ms/u/s!AlgVc_DKNHpmyoZBTme5RFB4b8iE9A?e=vewBuE

I built an example at 700,65,-71 (just nw of the spawn, across the water near the quartz buildings). 

The dispenser is loaded with some honey bottles, and pointed directly into the hopper. The bottles end up under the hopper, not picked up. 

I can't tell where your dispensers were in the picture above, and that world save is too huge to download. Could you provide a better picture or recreate the basic setup in a small flat world?

I can tell you that hoppers do not pick up items that are in the same block as them. Hoppers only pick up items that are in the block above.

Related to this, I tested 3 scenarios that I thought might be what you have going on, and this is what I found:

• A dispenser aimed into the side of a hopper ejects items into the same block as the hopper, and therefore, the hopper will not pick them up.

• A dispenser aimed downwards into the top of a solid block is on top of  a hopper will send items glitching out to the side, and not into the hopper.

• A dispenser aimed into the side of a solid block that is on top of a hopper does get the items into the hopper.

These are the behaviors I noticed, @GoldenHelmet

I was surprised to see that when a dispenser is aimed down into a solid block and the item glitches out, it still isn't picked up. This was not the behavior I expected. (that's what happened in the picture above)

Thankfully, a Minecart with Hopper will pick up these items. I just modified my designs.

Attached files reproducing error mentioned.  They seem to pick up items I drop into them with no issue, just not items tossed by the dispenser.  In this example, the items are ejected from between the two blocks, but forced to remain within the hopper's pickup area.

While trying to reproduce this bug in 1.14.20, I discovered more details.

I was able to reproduce a dispenser ejecting a bottle that (apparently) cannot be picked up only when:

1. The dispenser is pointed downwards into a solid block.

2. The dispenser is surrounded by some kind of block on all 4 sides.

3. The block to the west (-X direction) is a solid block.

4. The block to the east (+X direction) is a hopper.

With this setup the dispenser will appear to eject an item down and to the east that cannot be picked up by the player or hopper. The reason it cannot be picked up is explained by Pho's comment on MCPE-60178: the item appears in a different location than it actually is. The actual location is inside the the hopper to the east of the dispenser, trapped up against the side of the dispenser. If you break that hopper, you will see the item disappear from the ground and fall from where the hopper was. Or, you can pick the item up by stepping down into the top of the hopper, or by walking into the blocks directly to the north or south of the hopper (so that the hopper is at your waist, face, or over your head to the north or south).

With any other setup in which there are blocks on all 4 sides of a dispenser and at least 1 of them is a hopper, and the dispenser is pointed downwards into a solid block, the ejected item (and its shadow) will be partially visible inside the hopper block.

Thanks to Charles Terry for uploading the pics that show hoppers on the east side of the dispensers and solid blocks on the west.

Would it be possible to get a smaller world save showcasing some of the simple hopper/dispenser setups that aren't working as expected please?

Demo world uploaded.

• The farms oriented around the green ✔ collect honey bottles as expected, the farms oriented around the red ❌ do not.

• In the non-working farms, honey bottles or glass bottles get stuck in the edge of the hopper blocks next to the dispensers.

• The blue | marks the farm that appears to glitch out bottles that cannot be picked up. They can be picked up from their actual location between the dispenser and hopper as described in my previous comment.

• Each farm has an oak button on top to manually fire the dispensers. Use this to observe the glitch with empty bottles or any other item you'd like to put in.

This has been fixed in 1.16 by a change to the way dispensers eject items. Dispensers no longer eject items inside of solid blocks. Instead, the dispensed items immediately glitch out to the side to an open space, preferring the north or west direction. When the dispenser full of bottles harvest honey, the honey bottles get collected by hoppers as expected. The builds in the test world now work in every direction.