Feet Sticking inside bathtub

For about 6 month’s now, the balls of my feet stick the tub when I take a shower, which is better then slipping I guess. Why are they doing this?I ‘ve been having foot and ankle problems since age 5, 59 now

For about 6 month’s now, the balls of my feet stick the tub when I take a shower, which is better then slipping I guess. Why are they doing this?I ‘ve been having foot and ankle problems since age 5, 59 now

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Feet Sticking inside bathtub