Configure the option "Show formatted text in outline view" (File | Options)

Here you can configure if the outline view in Presentations shows formatted text.

Supported on: At least Windows Vista
Registry HiveHKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
Registry PathSOFTWARE\Policies\SoftMaker\Presentations 2018
Value NameShowFormattedOutline
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

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