Missing page header when using keyboard navigation

OpenUI5 version:
Tested on 1.71.32 and 1.85.5
Browser/version (+device/version):
latest chrome

Steps to reproduce the problem:

1. Create a semantic page (sap.f.semantic)
2. Set property headerPinnable of semantic page to false
3. Add filterbar (sap.ui.comp.filterbar) to headerContent of semantic page
4. Add Table (sap.m.table) to content area of semantic page
5. Disable growing features on table, so we immediately see all table items
6. Add items to that table, until the vertical scrollbar appears
7. Add a Select Control (sap.m.Select) to filterbar
8. For the next step, only use the keyboard "tab" and "arrow" keys.
9. Use the select control to filter the table down to only a few items, so we don't have a vertical scrollbar.
   Its important to use the "tab" key to select a filter item. Do not use "enter" key.

What is the expected result?
After filtering the table items, the header of the semantic page, including filterbar, should still be visible.

What happens instead?
The header of the semantic page, including filterbar, is not visible.

Any other information?
This bug only happens when using the keyboard, and the semantic page has headerPinnable set to false.
But it is still concerning, especially for accessibility reasons.

GIF showing the problem:

XML Code:

<mvc:View xmlns:core="sap.ui.core" xmlns:mvc="sap.ui.core.mvc" xmlns="sap.m" xmlns:semantic="sap.f.semantic"
	xmlns:fb="sap.ui.comp.filterbar" controllerName="myapp.controller.Main" height="100%">
	<semantic:SemanticPage showFooter="false" toggleHeaderOnTitleClick="false" busyIndicatorDelay="0"
		titleAreaShrinkRatio="0:0:2" headerPinnable="false">
		<semantic:titleHeading>
			<Title text="My App"></Title>
		</semantic:titleHeading>
		<semantic:headerContent>
			<fb:FilterBar id="filterBar" showFilterConfiguration="false"
			 filterBarExpanded="true" showClearOnFB="false" showClearButton="false" showGoOnFB="false"
				useToolbar="false" filterContainerWidth="100px" showRestoreButton="false">
				<fb:filterGroupItems>
					<fb:FilterGroupItem groupName="Basic" name="status" label="status" visibleInFilterBar="true">
						<fb:control>
							<Select id="statusSelect" change=".onFilterChangeApplyFilters">
								<items>
									<core:Item text="" key="all"></core:Item>
									<core:Item text="new" key="new"></core:Item>
									<core:Item text="old" key="old"></core:Item>
								</items>
							</Select>
						</fb:control>
					</fb:FilterGroupItem>
				</fb:filterGroupItems>
			</fb:FilterBar>
		</semantic:headerContent>
		<semantic:content>
			<Table id="table"
				items="{path: '/LIST'}"
				growing="false" growingScrollToLoad="false">
				<headerToolbar>
					<OverflowToolbar>
						<Title id="tableTitle" titleStyle="H3" text="{viewModel>/tableTitle}"/>
						<ToolbarSpacer/>
					</OverflowToolbar>
				</headerToolbar>
				<columns>
					<Column>
						<Text text="Description" id="colDescription"/>
					</Column>
					<Column minScreenWidth="Tablet" demandPopin="true" id="colDate">
						<Text text="Date"/>
					</Column>
				</columns>
				<items>
					<ColumnListItem vAlign="Middle">
						<cells>
							<Text text="{description}" id="description"/>
							<Text text="{ path:'date', type:'sap.ui.model.odata.type.DateTime', constraints: { displayFormat: 'Date' }}" id="date"/>
						</cells>
					</ColumnListItem>
				</items>
			</Table>
		</semantic:content>
	</semantic:SemanticPage>
</mvc:View>