Some redstone machines may cause the Observers to stay powered and cause problems.Only load Quark mod cause this.

exact same issue on 1.20.1
But setting "pistons move tile entities" to true seems to fix the issue.

exact same issue on 1.20.1 But setting "pistons move tile entities" to true seems to fix the issue.

yes, but I dont want pistons to move tile entities, add blacklist for chest instead of config false.

This is still an issue. Can't get vanilla redstone behaviour with quark automation disabled. Piston move tile entites introduces a lot of unpredictable behaviour and with it disabled the observer issue exists.

This is still an issue. Can't get vanilla redstone behaviour with quark automation disabled. Piston move tile entites introduces a lot of unpredictable behaviour and with it disabled the observer issue exists.

add blacklist for every chest or furnace or barrel

This is still an issue. Can't get vanilla redstone behaviour with quark automation disabled. Piston move tile entites introduces a lot of unpredictable behaviour and with it disabled the observer issue exists.

add blacklist for every chest or furnace or barrel

I movement blacklisted the following:

"Movement Blacklist" = ["minecraft:spawner", "integrateddynamics:cable", "randomthings:blockbreaker", "minecraft:ender_chest", "minecraft:enchanting_table", "minecraft:trapped_chest", "quark:spruce_trapped_chest", "quark:birch_trapped_chest", "quark:jungle_trapped_chest", "quark:acacia_trapped_chest", "quark:dark_oak_trapped_chest", "endergetic:bolloom_bud", "ironchest:iron_chest", "ironchest:gold_chest", "ironchest:diamond_chest", "ironchest:copper_chest", "ironchest:crystal_chest", "ironchest:obsidian_chest", "ironchest:dirt_chest", "ironchest:trapped_iron_chest", "ironchest:trapped_gold_chest", "ironchest:trapped_diamond_chest", "ironchest:trapped_copper_chest", "ironchest:trapped_crystal_chest", "ironchest:trapped_obsidian_chest", "ironchest:trapped_dirt_chest", "aether:_treasure_chest", "aether:chest_mimic", "woodworks:oak_chest", "woodworks:spruce_chest", "woodworks:birch_chest", "woodworks:jungle_chest", "woodworks:acacia_chest", "woodworks:dark_oak_chest", "woodworks:mangrove_chest", "woodworks:cherry_chest", "woodworks:crimson_chest", "woodworks:warped_chest", "woodworks:trapped_oak_chest", "woodworks:trapped_spruce_chest", "woodworks:trapped_birch_chest", "woodworks:trapped_jungle_chest", "woodworks:trapped_acacia_chest", "woodworks:trapped_dark_oak_chest", "woodworks:trapped_mangrove_chest", "woodworks:trapped_cherry_chest", "woodworks:trapped_crimson_chest", "woodworks:trapped_warped_chest", "ascended_quark:skyroot_chest", "ascended_quark:skyroot_trapped_chest", "minecraft:chest", "minecraft:furnace", "minecraft:blast_furnace", "tfmg:blast_furnace_output", "nethersdelight:blackstone_furnace", "nethersdelight:blackstone_blast_furnace", "enlightened_end:nuclear_furnace", "ascended_quark:holystone_furnace", "quark:blackstone_furnace", "quark:deepslate_furnace", "thermal:machine_furnace", "minecraft:barrel"]

However, blacklisting these blocks will still cause pistons to be non vanilla. They may fix observers, which I couldn't test because the pistons broke the machine with that enabled.