White glue is fine and in many cases ideal for tacking parts. However, you should make a permanent bond using CA afterward. White glue is water based and as such it is very sensitive to moisture. Even a very humid day can be enough to allow the glue to absorb moisture and lose it's grip.
Dean

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I use white glue for tacking photo-etch to resin or mold injected. I use white glue when gluing resin to mold injected so why not white glue when building resin models? Why CAs?