1 tick pulse into blocks not powering things

Windows_Minecraft - Release_516590

Summary: This one is tough to summarize, definitely watch the video for the example. A redstone block is placed to trigger a mechanism. The mechanism immediately replaces the block with air, and then one redstone tick (repeater) later, the same block space is supposed to be set to a different block, in this case sponge. When the repeater is set to 1 tick, the sponge block is not placed. When the repeater is set to 2 ticks or higher, the block is successfully placed.

Impact: Commands are either caused to run out of order or not at all, which causes uncertainty and could break components that rely on this.

Repro Steps:
1. Create a world
2. Place a command block 2 blocks above the ground.
3. /setblock ~ ~-1 ~ air in that command block
4. Place a repeater pointing away from the block of air under the command block. Set it to 1 tick.
5. Place a quartz block so the repeater points into it.
6. Place another command block on top of the quartz block, and have it set the block under the first command block to sponge. This command will vary depending on the direction/location of your test.
7. Place a redstone block under the first command block. The block will be set to air even though the sponge command should have run afterwards.
8. Lengthen the repeater to 2 ticks and place another redstone block under the first command block. Note that the correct block is now in place.

Observed Results:
Sponge does not get placed.

Expected Results:
Sponge should get placed.

Screenshots/Videos attached: https://youtu.be/MwpundvecUA

There is potential this relates to MCM-129.