Failed to save chunk: java.lang.RuntimeException

Getting this error when a player leaves the specified chunk. Tested on both 1.14.1 snapshots.
The server has a free space of 100GB.

[18:48:28] [Server thread/ERROR]: Failed to save chunk 130,-150
java.lang.RuntimeException: Too big to save, 1093258 > 1048576
        at bxz.a(SourceFile:250) ~[server-1.14.1.jar:?]
        at bxz$a.close(SourceFile:236) ~[server-1.14.1.jar:?]
        at java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:241) ~[?:1.8.0_171]
        at java.io.FilterOutputStream.close(FilterOutputStream.java:159) ~[?:1.8.0_171]
        at java.io.FilterOutputStream.close(FilterOutputStream.java:159) ~[?:1.8.0_171]
        at bya.a(SourceFile:61) ~[server-1.14.1.jar:?]
        at bxx.a(SourceFile:58) ~[server-1.14.1.jar:?]
        at us.a(SourceFile:640) ~[server-1.14.1.jar:?]
        at us.a(SourceFile:410) ~[server-1.14.1.jar:?]
        at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:656) [?:1.8.0_171]
        at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:632) [?:1.8.0_171]
        at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) [?:1.8.0_171]
        at agk.h(SourceFile:135) [server-1.14.1.jar:?]
        at agk.p(SourceFile:114) [server-1.14.1.jar:?]
        at ve$a.p(SourceFile:507) [server-1.14.1.jar:?]
        at ve.d(SourceFile:239) [server-1.14.1.jar:?]
        at net.minecraft.server.MinecraftServer.aW(SourceFile:708) [server-1.14.1.jar:?]
        at net.minecraft.server.MinecraftServer.p(SourceFile:696) [server-1.14.1.jar:?]
        at agk.bf(SourceFile:99) [server-1.14.1.jar:?]
        at net.minecraft.server.MinecraftServer.o(SourceFile:680) [server-1.14.1.jar:?]
        at net.minecraft.server.MinecraftServer.run(SourceFile:636) [server-1.14.1.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_171]