Shader error on Safari iPhone 14

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Hi everyone,

Our users report the following error on iPhone 14 (works on other iPhones):

null is not an object (evaluating '_0x271a06 ['getShaderPrecisionFormat'] (_0x271a06['VERTEX_SHADER'], _0x271a06 ['HOGH_FLOAT'])['precision']')

What strange is that it works everywhere else, including iPad and other iPhones. Could it be related to the disabled WebGL or what can it be?
Thanks!

PS: Unfortunately, I do not have iPhone 14 to reproduce.

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It seems my question was answered here: "Context Lost" when backgrounding Safari on iOS 17 Developer Beta 8 - #4 by Mugen87