Assertion violation on NRA formula 2

[muchang]

Hi,
For this formula,

(declare-fun a () Real)
(declare-fun b () Real)
(declare-fun c () Real)
(declare-fun d () Real)
(declare-fun e () Real)
(declare-fun f () Real)
(declare-fun g () Real)
(declare-fun h () Real)
(assert
  (exists
    ((i Real))
    (or
      (= (/ d g) 1)
      (<
        (+
          (* (/ b c) (/ 1 h h))
          (* (+ (/ 2 b c) h f) (+ (/ 3 b) h f))
        )
        (/ a e)
      )
    )
  )
)
(check-sat)

z3 will throw out the assertion violation:

ASSERTION VIOLATION
File: ../src/math/polynomial/polynomial.cpp
Line: 800
m_monomials.empty()
(C)ontinue, (A)bort, (S)top, (T)hrow exception, Invoke (G)DB

OS: Ubuntu 18.04
Revision: a635049 (./configure -d)