Public offering is not an institution, but a classification of funds. This adjustment is to limit the operation of publicly raised funds and protect the interests of investors. If it is a bond fund, it is arbitrary to use the fund to buy stocks as soon as the stock market is good. This kind of operation may be used to invest in investment products that fund managers can make a profit, which may harm the interests of investors, so it must be restricted.
Of course, it is also possible to suffer losses in a bear market because of position restrictions.
As for how to avoid it. Taking stocks as an example, there is a certain hedging relationship between different stocks, and the risk of high positions can be avoided through different combinations of stocks. If oil prices fall, oil stocks may fall, but many industries such as logistics and aviation will benefit. This is a hedge. So don't worry too much about position adjustment.