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adl5535 mechanical stree

I use  RF cover  that make cavities on the PCB .

during  cold cycle -30 deg C   the ADL5535  stop working and don't draw  any current  .

After returning to 25 deg  the IC  70 % time return to work normally and 30 % remain faulty .

after reordering [ hitting ] the part  the  IC return to draw currant and work  normally .

I found similar mechanism that generate the problem :

few knocks on the  IC  , the current consumption drop to 0

resold ring [ hitting ] the gnd ped the current return and part work