Error on resizing panes

Error: TypeError: Failed to construct 'CustomEvent': Please use the 'new' operator, this DOM object constructor cannot be called as a function.at new t (https://bugfest-iris.folio.ebsco.com/20210421-173521/bundle.6e8d03c8d6ba235ee75f.js:358:1039563)
at t.writeStorage (https://bugfest-iris.folio.ebsco.com/20210421-173521/bundle.6e8d03c8d6ba235ee75f.js:358:1039912)
at Object.onResize (https://bugfest-iris.folio.ebsco.com/20210421-173521/bundle.6e8d03c8d6ba235ee75f.js:358:176898)
at i.<anonymous> (https://bugfest-iris.folio.ebsco.com/20210421-173521/bundle.6e8d03c8d6ba235ee75f.js:371:508381)
at fo (https://bugfest-iris.folio.ebsco.com/20210421-173521/bundle.6e8d03c8d6ba235ee75f.js:387:48554)
at oc (https://bugfest-iris.folio.ebsco.com/20210421-173521/bundle.6e8d03c8d6ba235ee75f.js:387:83585)
at ps (https://bugfest-iris.folio.ebsco.com/20210421-173521/bundle.6e8d03c8d6ba235ee75f.js:387:101246)
at t.unstable_runWithPriority (https://bugfest-iris.folio.ebsco.com/20210421-173521/bundle.6e8d03c8d6ba235ee75f.js:395:3844)
at Ua (https://bugfest-iris.folio.ebsco.com/20210421-173521/bundle.6e8d03c8d6ba235ee75f.js:387:45024)
at ds (https://bugfest-iris.folio.ebsco.com/20210421-173521/bundle.6e8d03c8d6ba235ee75f.js:387:97718)

in i
in WithPaneset(i)
in ForwardRef
in Ro
in o
in withRouter(o)
in div
in t
in t
in HotKeys-t
in i
in jt
in i
in i
in WithConnect(i)
in S
in s
in WithStripes(s)
in t
in Y
in t
in div
in Suspense
in div
in t
in t
in HotKeys-t
in i
in t
in t
in HotKeys-t
in i
in u
in t
in h
in i
in WithStripes(i)
in i
in Dt
in div
in o
in t
in t
in main
in Ba
in i
in div
in hn
in c
in WithModules(c)
in withRouter(WithModules(c))
in t
in f
in t
in t
in HotKeys-t
in t
in h
in i
in WithStripes(i)
in i
in injectIntl(i)
in i
in IntlProvider
in l
in s
in i
in c
in WithModules(c)
in S
in i