Loading a specific structure containing observers and piston with stucture block crashes server

Saving the structure shown in the screenshot and then loading it caused the server to crash. On re-starting the server, it crashed again and produced a crash dump. On the second restart it recovered.
Further information: The piston in the structure was facing South and the structure was loaded without rotation and with default offset 0 1 0.

Description: Exception while updating neighbours

java.lang.StackOverflowError: Exception while updating neighbours
	at ajn.a(SourceFile:456)
	at ajn.a(SourceFile:434)
	at apc.e(SourceFile:88)
	at apc.d(SourceFile:80)
	at apc.a(SourceFile:68)
	at ath$a.a(SourceFile:418)
	at ajn.a(SourceFile:454)
	at ajn.d(SourceFile:422)
	at ajn.c(SourceFile:389)
	at ayx.a(SourceFile:249)
	at ayx.b(SourceFile:180)
	at ayx.a(SourceFile:176)
	at ass.c(SourceFile:419)
	at arb.a(SourceFile:117)
	at arb.a(SourceFile:105)
	at ath$a.a(SourceFile:418)
	at ajn.a(SourceFile:454)
	at ajn.a(SourceFile:434)
	at apc.e(SourceFile:88)
	at apc.d(SourceFile:80)
	at apc.a(SourceFile:68)
	at ath$a.a(SourceFile:418)

-- Block being updated --
Details:
	Source block type: ID #218 (tile.observer // apc)
	Block: minecraft:structure_block[mode=load]
	Block location: World: (-125,70,103), Chunk: (at 3,4,7 in -8,6; contains blocks -128,0,96 to -113,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)

-- Block being updated --
Details:
	Source block type: ID #1 (tile.stone // aqx)
	Block: minecraft:observer[facing=south,powered=false]
	Block location: World: (-125,71,104), Chunk: (at 3,4,8 in -8,6; contains blocks -128,0,96 to -113,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)

-- Block being updated --
Details:
	Source block type: ID #218 (tile.observer // apc)
	Block: minecraft:structure_block[mode=load]
	Block location: World: (-125,70,103), Chunk: (at 3,4,7 in -8,6; contains blocks -128,0,96 to -113,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)

-- Block being updated --
Details:
	Source block type: ID #1 (tile.stone // aqx)
	Block: minecraft:observer[facing=south,powered=false]
	Block location: World: (-125,71,104), Chunk: (at 3,4,8 in -8,6; contains blocks -128,0,96 to -113,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)