I don't know if this is relevant to anyone or CDPR, but in the inputusermappings.xml file - at the end of the added arcade section

<mapping name="roach_race_jump" type="Button" SIEJADependent="true" >
<button id="IK_Up" />
<button id="IK_W" />
<button id="IK_Space"overridableUI="selectUpSecondary" />
<button id="IK_Pad_A_CROSS"/>
<button id="IK_Pad_DigitUp"/>
</mapping>

You need to add an extra space in this line: <button...

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