The issue seems to crop up when the table gets its own vertical scroll bar when the horizontal scroll bar is added due to the number of fields.

The behaviour happens scrolling down the table using it’s vertical scroll bar. Then the header can’t be seen until you scroll the table back to the top. The page vertical bar will show the table header only when the table is scrolled to the top.

<skuidpage unsavedchangeswarning="yes" personalizationmode="server" useviewportmeta="true" showsidebar="false" showheader="true" tabtooverride="Project__c">

    <models>

        <model id="Accounts" limit="150" query="true" createrowifnonefound="false" datasource="salesforce" sobject="Account">

            <fields>

                <field id="RecordTypeId"/>

                <field id="Name"/>

                <field id="Description"/>

                <field id="Fax"/>

                <field id="Id"/>

                <field id="Phone"/>

                <field id="Type"/>

                <field id="AnnualRevenue"/>

                <field id="NumberOfEmployees"/>

                <field id="Industry"/>

                <field id="LastActivityDate"/>

                <field id="LastModifiedDate"/>

                <field id="LastReferencedDate"/>

                <field id="LastViewedDate"/>

            </fields>

            <conditions/>

            <actions/>

        </model>

    </models>

    <components>

        <skootable showconditions="true" showsavecancel="true" showerrorsinline="true" searchmethod="server" searchbox="true" showexportbuttons="false" hideheader="false" hidefooter="false" pagesize="all" alwaysresetpagination="false" createrecords="true" model="Accounts" buttonposition="" mode="read" allowcolumnreordering="true" responsive="true" uniqueid="sk-3U1_-496" allowscrollbars="true" floatheader="true">

            <fields>

                <field id="RecordTypeId" uniqueid="sk-3U1_-501"/>

                <field id="LastViewedDate" hideable="true" uniqueid="fi-3U1_-829"/>

                <field id="LastViewedDate" hideable="true" uniqueid="fi-3U1_-947"/>

                <field id="Industry" hideable="true" uniqueid="fi-3U1_-1161"/>

                <field id="LastActivityDate" hideable="true" uniqueid="fi-3U1_-1143"/>

                <field id="Type" hideable="true" uniqueid="fi-3U1_-1185"/>

                <field id="Industry" hideable="true" uniqueid="fi-3U1_-965"/>

                <field id="LastActivityDate" hideable="true" uniqueid="fi-3U1_-956"/>

                <field id="Description" hideable="true" uniqueid="fi-3U1_-1194"/>

                <field id="LastModifiedDate" hideable="true" uniqueid="fi-3U1_-1125"/>

                <field id="LastViewedDate" hideable="true" uniqueid="fi-3U1_-1134"/>

                <field id="LastReferencedDate" hideable="true" uniqueid="fi-3U1_-1116"/>

                <field id="RecordTypeId" hideable="true" uniqueid="fi-3U1_-1107"/>

                <field id="LastReferencedDate" hideable="true" uniqueid="fi-3U1_-996"/>

                <field id="LastActivityDate" hideable="true" uniqueid="fi-3U1_-1152"/>

                <field id="LastReferencedDate" hideable="true" uniqueid="fi-3U1_-936"/>

                <field id="LastActivityDate" hideable="true" uniqueid="fi-3U1_-718"/>

            </fields>

            <rowactions>

                <action type="edit"/>

                <action type="delete"/>

            </rowactions>

            <massactions usefirstitemasdefault="true">

                <action type="massupdate"/>

                <action type="massdelete"/>

            </massactions>

            <views>

                <view type="standard"/>

            </views>

        </skootable>

    </components>

    <resources>

        <labels/>

        <css/>

        <javascript/>

        <actionsequences uniqueid="sk-3U1_-309"/>

    </resources>

    <styles>

        <styleitem type="background" bgtype="none"/>

    </styles>

</skuidpage>