Unexpected exception in `largestTriangleThreeBucketsState` about clickhouse

[alsugiliazova]

Also related to this example:

select largestTriangleThreeBucketsMerge(4)(CAST(unhex('06050000000000000000000000000000F03F000000000000F07FCDCCCCCCCCCC1A4000000000000010400000000000001440000000000000F03F666666666666024000000000000008400000000000001040000000000000F03F'), 'AggregateFunction(largestTriangleThreeBuckets(4), Float64 ,Float64)'))

I ran the query 100 times and got different results. Some of them:

[(0,1),(1,2.3),(5,6.93977503477283e-310),(inf,4)]
[(0,1),(1,2.3),(5,0),(inf,4)]
[(0,1),(1,2.3),(5,0),(inf,4)]
[(0,1),(1,2.3),(5,0),(inf,4)]
[(0,1),(1,2.3),(5,0),(inf,4)]
[(0,1),(1,2.3),(5,nan),(inf,4)]
[(0,1),(4,1),(5,1.5063441147720952e214),(inf,4)]
[(0,1),(1,2.3),(5,2e-323),(inf,4)]
[(0,1),(4,1),(5,3),(inf,4)] 
[(0,1),(4,1),(5,3.367637463894689e63),(inf,4)]

Is that instability in this function expected?
Should I open a separate issue for that?