Copper Golem does not get close enough to search the chest, getting permanently stuck

Steps to reproduce:

1. Build the copper chest formation shown in the video.

2. try spawning copper golems right in front of the side chests of the triplets. try both left and right. (with one golem at a time)

3. observe

Observed result:

Copper golem may not get close enough to the middle chest, causing it to get stuck

Expected result:

Copper golem would consistently search all copper chests

Notes:

This bug seems to be locational and/or directional. you may need to try multiple times in multiple directions. In the shown video, I attempt to spawn the copper golem in front of the left chest each time. as you can see, the bug happens 3 times, but for the one facing west, the bug does not happen and the copper golem continues to successfully search chests. in my case, attempting the same but spawning in front of the right chest each time results in the copper golem only getting stuck once, for the one pointing north.