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[CYPHER] String concatenation with || and null returns string instead of null

Status: Open.

#3926 In ArcadeData/arcadedb;

· ExtReMLapin opened on Apr 19, 2026

[CYPHER] RETURN ALL keyword is accepted but should raise syntax error

Status: Open.

#3925 In ArcadeData/arcadedb;

· ExtReMLapin opened on Apr 19, 2026

[CYPHER] CASE null WHEN null returns matched instead of not_matched

Status: Open.

#3922 In ArcadeData/arcadedb;

· ExtReMLapin opened on Apr 19, 2026

[CYPHER] Dynamic label matching with $() doesn't work

Status: Open.

#3923 In ArcadeData/arcadedb;

· ExtReMLapin opened on Apr 19, 2026

[CYPHER] List concatenation operator || returns only first list

Status: Open.

#3921 In ArcadeData/arcadedb;

· ExtReMLapin opened on Apr 19, 2026

[CYPHER] tail(null) returns [] instead of null

Status: Open.

#3920 In ArcadeData/arcadedb;

· ExtReMLapin opened on Apr 19, 2026

HA: stale follower recovery when snapshot download fails on a quiet cluster

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#3893 In ArcadeData/arcadedb;

· lvca opened on Apr 17, 2026

·  

26.5.1

Raft gRPC: add support for mTLS for encryption and peer identity

Status: Open.

Feature

#3890 In ArcadeData/arcadedb;

· lvca opened on Apr 17, 2026

·  

26.5.1

any(...) list predicates may be evaluated correctly as expressions in RETURN, but ignored or inverted when used in WHERE.

Status: Open.

Bug

#3888 In ArcadeData/arcadedb;

· Silence6666668 opened on Apr 17, 2026

·  

26.4.1

Import Database issues with HA

Status: Open.

#3887 In ArcadeData/arcadedb;

· sashman-jaspin opened on Apr 17, 2026

TimeSeries InfluxDB Line Protocol: silent data loss, no gzip support, doc/grammar mismatch

bug

Status: Open.

#3821 In ArcadeData/arcadedb;

· robfrank opened on Apr 12, 2026

Support for filtering vectorNeighbours

questionFurther information is requestedFurther information is requested

Status: Open.

#3816 In ArcadeData/arcadedb;

· syntact-io-office-user opened on Apr 10, 2026