Note: This has been happening since 1.20 (i think), but I am reporting it now. Sorry if it is a duplicate (if it is).
So, villagers have an intelligence issue. Sometimes, villagers can't farm or harvest crops because they don't want to jump even though they can. If water (from the water source for the crops) is blocking the villager's way from farming or harvesting the crop, the villager will stay there and stare at the area they are trying to harvest or farm at. The villager, a while later, will attempt to use its intelligence to go around, jump, or attempt to move closer to the harvesting/farming area so they can successfully complete their job. That also applies to worksite blocks. The villager wander around the building outside, trying to get as close to the where they work at (the worksite block), and find an area outside of the building that is closest to their worksite block (even though the worksite block is actually inside the building).
I will edit this later, and add more information onto this bug report.
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I mentioned about farming and harvesting crops, and worksite blocks. The two bug reports you mentioned related to issues about pathfinding to worksite blocks, beds and houses. However, none of them reported issues about farming/harvesting. Villagers also have an intelligence issue when they try to harvest/farm crops (as I said in my bug report). To summarise, villagers stare at the area they are trying to harvest or farm at if something is blocking their way (for example, a water source), or if they don't want to jump (or use an alternative pathway) due to their low intelligence. A while later, they will attempt to use their intelligence to move around and successfully complete the job the villagers are trying to do.

I mentioned about farming and harvesting crops, and worksite blocks. The two bug reports you mentioned related to issues about pathfinding to worksite blocks, beds and houses. However, none of them reported issues about farming/harvesting. Villagers also have an intelligence issue when they try to harvest/farm crops (as I said in my bug report). To summarise, villagers stare at the area they are trying to harvest or farm at if something is blocking their way (for example, a water source), or if they don't want to jump (or use an alternative pathway) due to their low intelligence. A while later, they will attempt to use their intelligence to move around and successfully complete the job the villagers are trying to do.
Thank you for your report!
We're tracking this issue in MCPE-162250 and MCPE-166344, so this ticket is being resolved and linked as a duplicate.
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Would MCPE-162250 and/or MCPE-42912 describe your issue?
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