The new patch seems to have tried to add a test to see if your sim is standing in the water, but it's faulty and on top of that, deleted the original stuff that should be there to check whether or not you unlocked the Influence Emotion powers.
For all of the 14 burst of emotions available (happy, embarrassed, confident, dazed, sad, bored, uncomfortable, focused, inspired, stressed, flirty, angry, playful and energized), a wading in water test has appeared:
<V t="wading_interval_test">
<U n="wading_interval_test">
<T n="negate">False</T>
<V n="test" t="custom">
<U n="custom">
<U n="height_range">
<T n="lower_bound">-300</T>
<T n="upper_bound">0</T>
</U>
</U>
</V>
</U>
</V>
But this should probably be replaced by the more general (and working) wading in water test set for self (actor):
<V t="test_set_reference">
<T n="test_set_reference">213995<!--testSet_InWater_NotInWater_Self--></T>
</V>
And these vampire power unlock test sets that were present before the patch seem to have disappeared completely and should be restored:
<V t="bucks_perks_test">
<U n="bucks_perks_test">
<T n="bucks_perk">150888<!--vampirePerks_MindPowers_EmotionalBurst_1--></T>
</U>
</V>
<V t="test_set_reference">
<T n="test_set_reference">153333<!--testSet_VampirePowerCost_Large--></T>
</V>
<V t="statistic_in_category">
<U n="statistic_in_category">
<T n="check_for_existence">False</T>
<E n="statistic_category">MindPowers_Buffs</E>
<V t="enabled" n="tooltip">
<T n="enabled">0x20419825<!--This sim is already under a vampire's influence--></T>
</V>
<E n="who">TargetSim</E>
</U>
</V>
Adding the correct water wading test set and restoring the missing other stuff seems to work for me in restoring the use of Influence Emotions. I hope that helps the SimGurus implement an official fix.
Anyone who wants my unofficial fix can find it on my WordPress blog by searching for "simvasion sims 4 mods". The first search result will probably be for my old family leave fix which you can click through to get to site and find the mods section. (Direct linking to mods isn't allowed, so you have to go through a search engine 😳).