Some non-full blocks cannot be affected by flowing water

The Issue Summary:

Certain blocks aren't destroyed when water flows to its space. These blocks are not waterlogged. These blocks are Levers, Redstone Comparator and Repeaters, Strings, Tripwire Hooks, and End Rods. See the screenshot in attachments for visual evidence.

Reproducing the Bug:

To recreate this issue, place water beside any of these blocks:

• Lever
• Redstone Comparator
• Redstone Repeater
• Tripwire Hook
• End Rod
• String

so that the water flows towards their spaces. Do not waterlog the blocks.

Observed Outcome:

The water flows through the blocks without destroying them.

Expected Outcome:

Normally, the water should destroy the blocks when water flows in their spaces.