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Using Public Data Release of Zwicky Transient Facility observations, we foundthat MGAB-V859 and ZTF18abgjsdg are dwarf novae and show both ER UMa-type and ZCam-type states. There had been only two dwarf novae showing similartransitions between the ER UMa-type and Z Cam-type states. MGAB-V859 showedboth a transition from the ER UMa-type state to a long standstill in 2019 and aZ Cam-type state in 2020. During the standstill in 2020, this object fadedtwice and showed dwarf nova-type variations. ZTF18abgjsdg usually showed ERUMa-type behavior but standstills were seen in 2018 and 2019. The supercyclesof these objects during the typical ER UMa-type phase were 55 d and 58 d,respectively. These objects provide additional evidence that some ER UMa starsindeed bridge between dwarf nova and novalike states as proposed in Kato et al.(2016).

MGAB-V859 and ZTF18abgjsdg: ER UMa-type dwarf novae showing standstills